Rifle Scopes Schmidt Bender 5-25x56. What ring height?
- Thread starter neo223
- Start date
Re: Schmidt Bender 5-25x56. What ring height?
1" will work but you really don't need any more than a 20 MOA base with that scope unless it's going on an extreme long range rtifle and you want to get the extra elevation. With a 20 MOA base you will have about 70 MOA of elevation. Most .308s get to 1000 in about 36-40 MOA.
Here's how far the 1" height Badgers rings on a 20 MOA badger base put the objective from the barrel, which is a #7 contour on my .308. Kinda blurry pics but you get the idea.
1" will work but you really don't need any more than a 20 MOA base with that scope unless it's going on an extreme long range rtifle and you want to get the extra elevation. With a 20 MOA base you will have about 70 MOA of elevation. Most .308s get to 1000 in about 36-40 MOA.
Here's how far the 1" height Badgers rings on a 20 MOA badger base put the objective from the barrel, which is a #7 contour on my .308. Kinda blurry pics but you get the idea.
Re: Schmidt Bender 5-25x56. What ring height?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sniperaviator</div><div class="ubbcode-body">1" from where to where? </div></div>
top of rail to centerline of scope
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sniperaviator</div><div class="ubbcode-body">1" from where to where? </div></div>
top of rail to centerline of scope
Re: Schmidt Bender 5-25x56. What ring height?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: neo223</div><div class="ubbcode-body">Hey guys. I just ordered a Schmidt Bender 5-25x56 for an R700 on an AICS with 40 moa base. What Badger ring height do I need?
Are the 1" going to be low enough or should I change the base to a 20 moa?
Thanks in advance. </div></div>
Your barrel contour also affects the clearance between the barrel and the objective. 1.0" Badgers will get the scope fairly low to the barrel on a 20 MOA base with an AICS. If you have an MTU or similar heavy contour barrel and are running a 40 MOA base, 1.0" rings may leave you a little short of barrel clearance for the Butler Creek objective.
I originally mounted a PMII 5-25X 56 in Seekins HIGH (.970") Rings on my X-Ray 51, but even after aggressive shaving of the bottom of the Butler Creek Flip Open on the Objective the BC still rubbed. Below is a photo of the clearance between my Tac Ops Heavy Contour barrel and the objective of the PMII 5-25X 56 with a USO ARD. (Seekins HIGH (.970") and Tac Ops Two-Piece 40 MOA base).
You cannot tell from the photos, but the thickness of the Butler Creek Objective Flip Open was thick enough that with Leupold Mark 4 High Rings (1.06" from top of base to ring centerline), I had to grind the bottom of the Butler Creek objective cap <span style="font-style: italic">a lot</span> to be sure that the barrel wouldn't rub. The barrel shown below is a Tac Ops Heavy Contour. Base is a Tac Ops Two-Piece 40 MOA.
<span style="font-weight: bold"><span style="font-style: italic">PMII 5-25X 56 in Seekins Highs (.970") on top of Tac Ops Two-Piece 40 MOA base over Tac Ops Heavy Contour barrel without Butler Creek Flip Open installed:</span></span>
Switching to Leupold Mark 4 HIGH (1.06") rings eliminated the rubbing between the Objective's BC Flip Open and the barrel. Badger 1.0" would be close, and still might rub even after shaving of the BC Flip Open. Something to keep in mind.
<span style="font-weight: bold"><span style="font-style: italic">PMII 5-25X in Mark 4 Highs (1.06") rings on top of Tac Ops Two-Piece 40 MOA base over Tac Ops Heavy Contour barrel with Butler Creek flip Open installed (bottom of BC Flip Open aggressively shaved):</span></span>
Keith
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: neo223</div><div class="ubbcode-body">Hey guys. I just ordered a Schmidt Bender 5-25x56 for an R700 on an AICS with 40 moa base. What Badger ring height do I need?
Are the 1" going to be low enough or should I change the base to a 20 moa?
Thanks in advance. </div></div>
Your barrel contour also affects the clearance between the barrel and the objective. 1.0" Badgers will get the scope fairly low to the barrel on a 20 MOA base with an AICS. If you have an MTU or similar heavy contour barrel and are running a 40 MOA base, 1.0" rings may leave you a little short of barrel clearance for the Butler Creek objective.
I originally mounted a PMII 5-25X 56 in Seekins HIGH (.970") Rings on my X-Ray 51, but even after aggressive shaving of the bottom of the Butler Creek Flip Open on the Objective the BC still rubbed. Below is a photo of the clearance between my Tac Ops Heavy Contour barrel and the objective of the PMII 5-25X 56 with a USO ARD. (Seekins HIGH (.970") and Tac Ops Two-Piece 40 MOA base).
You cannot tell from the photos, but the thickness of the Butler Creek Objective Flip Open was thick enough that with Leupold Mark 4 High Rings (1.06" from top of base to ring centerline), I had to grind the bottom of the Butler Creek objective cap <span style="font-style: italic">a lot</span> to be sure that the barrel wouldn't rub. The barrel shown below is a Tac Ops Heavy Contour. Base is a Tac Ops Two-Piece 40 MOA.
<span style="font-weight: bold"><span style="font-style: italic">PMII 5-25X 56 in Seekins Highs (.970") on top of Tac Ops Two-Piece 40 MOA base over Tac Ops Heavy Contour barrel without Butler Creek Flip Open installed:</span></span>
Switching to Leupold Mark 4 HIGH (1.06") rings eliminated the rubbing between the Objective's BC Flip Open and the barrel. Badger 1.0" would be close, and still might rub even after shaving of the BC Flip Open. Something to keep in mind.
<span style="font-weight: bold"><span style="font-style: italic">PMII 5-25X in Mark 4 Highs (1.06") rings on top of Tac Ops Two-Piece 40 MOA base over Tac Ops Heavy Contour barrel with Butler Creek flip Open installed (bottom of BC Flip Open aggressively shaved):</span></span>
Keith
Re: Schmidt Bender 5-25x56. What ring height?
That 40moa makes a difference for sure!
I know that with my Rock M24/40 contour a 20 moa base puts my objective very very close to parallel with the barrel, so real low can be obtained.
That 40moa makes a difference for sure!
I know that with my Rock M24/40 contour a 20 moa base puts my objective very very close to parallel with the barrel, so real low can be obtained.
Re: Schmidt Bender 5-25x56. What ring height?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: neo223</div><div class="ubbcode-body">Hey guys. I just ordered a Schmidt Bender 5-25x56 for an R700 on an AICS with 40 moa base. What Badger ring height do I need?
Are the 1" going to be low enough or should I change the base to a 20 moa?
Thanks in advance.</div></div>
Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for. If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: neo223</div><div class="ubbcode-body">Hey guys. I just ordered a Schmidt Bender 5-25x56 for an R700 on an AICS with 40 moa base. What Badger ring height do I need?
Are the 1" going to be low enough or should I change the base to a 20 moa?
Thanks in advance.</div></div>
Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for. If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero.
Re: Schmidt Bender 5-25x56. What ring height?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: neo223</div><div class="ubbcode-body">Hey guys. I just ordered a Schmidt Bender 5-25x56 for an R700 on an AICS with 40 moa base. What Badger ring height do I need?
Are the 1" going to be low enough or should I change the base to a 20 moa?
Thanks in advance.</div></div>
Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for. If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero. </div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body">Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for.</div></div>
Mike, PMIIs' are adjusted <span style="font-weight: bold"><span style="font-style: italic">out-of-center UPWARD</span></span> at the S & B factory <span style="font-weight: bold">by half of the scope's total travel</span>, which in the case of a PMII 5-25X is 13.5 MILs'/135 0.1 MIL clicks. This is to provide upward Elevation bias for long range shooting. This means that the reticle sits pretty high inside the tube, and in order to be able to zero at closer range while still being able to get out to 2,000 meters (the PMII 5-25X was designed for use on the AI AWM 338LM) an aggressive base cant is required. This is why S & B recommends the use of canted base (S & B refers to canted bases as <span style="font-style: italic">"forward angled"</span>) approximating half of the total elevation of the respective scope.
On a PMII 5-25X with 0.1 MIL adjustments this means a 45 MOA base, which - depending upon the geographic location/atmospheric conditions, may be close for a .308 at when zeroing at 100 yards. I have a Tac Ops Two-Piece 40 MOA base, and I have no problem zeroing at 100 yards and maintaining nearly the full elevation travel (I still have 26.4 MILs' of "UP", with 0.6 MIL <span style="font-style: italic">below "zero"</span>). Now before anyone chimes-in and asks if the reticle moves with <span style="font-style: italic">every</span> click - "Yes" it does. The reticle moves positively and smoothly with each click all the way to 26.4 MILs'.
Thats' not to say that a 45 MOA base is absolutely "needed". Most .308 loads will get out to 1,000 yards in 10 MILs, so for most people the full travel of a PMII 5-25X is "wasted" because the caliber winds up being the limiting factor.
However, <span style="font-style: italic">neo223</span> never mentioned the caliber or whether the action is Long or Short. A 40 or 45 MOA base covers most anything.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body">If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero. </div></div>
That is true - it <span style="font-style: italic">IS possible</span> that that <span style="font-style: italic">neo223</span> may not be able to get a 100 yard zero with a 45 MOA base, but <span style="font-style: italic">neo223</span> is mounting a PMII 5-25X on an M700 in an AICS, not a Hensoldt 4-16X on a 45 MOA base on a TRG42.
The two are very different scenarios and I think it will close at 100 yards with <span style="font-style: italic">neo223</span>'s geographic location and prevailing atmospheric conditions will play a factor here. Personally, I would opt for a base in the 30-40 MOA range.
Keith
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: neo223</div><div class="ubbcode-body">Hey guys. I just ordered a Schmidt Bender 5-25x56 for an R700 on an AICS with 40 moa base. What Badger ring height do I need?
Are the 1" going to be low enough or should I change the base to a 20 moa?
Thanks in advance.</div></div>
Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for. If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero. </div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body">Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for.</div></div>
Mike, PMIIs' are adjusted <span style="font-weight: bold"><span style="font-style: italic">out-of-center UPWARD</span></span> at the S & B factory <span style="font-weight: bold">by half of the scope's total travel</span>, which in the case of a PMII 5-25X is 13.5 MILs'/135 0.1 MIL clicks. This is to provide upward Elevation bias for long range shooting. This means that the reticle sits pretty high inside the tube, and in order to be able to zero at closer range while still being able to get out to 2,000 meters (the PMII 5-25X was designed for use on the AI AWM 338LM) an aggressive base cant is required. This is why S & B recommends the use of canted base (S & B refers to canted bases as <span style="font-style: italic">"forward angled"</span>) approximating half of the total elevation of the respective scope.
On a PMII 5-25X with 0.1 MIL adjustments this means a 45 MOA base, which - depending upon the geographic location/atmospheric conditions, may be close for a .308 at when zeroing at 100 yards. I have a Tac Ops Two-Piece 40 MOA base, and I have no problem zeroing at 100 yards and maintaining nearly the full elevation travel (I still have 26.4 MILs' of "UP", with 0.6 MIL <span style="font-style: italic">below "zero"</span>). Now before anyone chimes-in and asks if the reticle moves with <span style="font-style: italic">every</span> click - "Yes" it does. The reticle moves positively and smoothly with each click all the way to 26.4 MILs'.
Thats' not to say that a 45 MOA base is absolutely "needed". Most .308 loads will get out to 1,000 yards in 10 MILs, so for most people the full travel of a PMII 5-25X is "wasted" because the caliber winds up being the limiting factor.
However, <span style="font-style: italic">neo223</span> never mentioned the caliber or whether the action is Long or Short. A 40 or 45 MOA base covers most anything.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body">If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero. </div></div>
That is true - it <span style="font-style: italic">IS possible</span> that that <span style="font-style: italic">neo223</span> may not be able to get a 100 yard zero with a 45 MOA base, but <span style="font-style: italic">neo223</span> is mounting a PMII 5-25X on an M700 in an AICS, not a Hensoldt 4-16X on a 45 MOA base on a TRG42.
The two are very different scenarios and I think it will close at 100 yards with <span style="font-style: italic">neo223</span>'s geographic location and prevailing atmospheric conditions will play a factor here. Personally, I would opt for a base in the 30-40 MOA range.
Keith
Re: Schmidt Bender 5-25x56. What ring height?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Aries64</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: neo223</div><div class="ubbcode-body">Hey guys. I just ordered a Schmidt Bender 5-25x56 for an R700 on an AICS with 40 moa base. What Badger ring height do I need?
Are the 1" going to be low enough or should I change the base to a 20 moa?
Thanks in advance.</div></div>
Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for. If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero. </div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body">Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for.</div></div>
Mike, PMIIs' are adjusted <span style="font-weight: bold"><span style="font-style: italic">out-of-center UPWARD</span></span> at the S & B factory <span style="font-weight: bold">by half of the scope's total travel</span>, which in the case of a PMII 5-25X is 13.5 MILs'/135 0.1 MIL clicks. This is to provide upward Elevation bias for long range shooting. This means that the reticle sits pretty high inside the tube, and in order to be able to zero at closer range while still being able to get out to 2,000 meters (the PMII 5-25X was designed for use on the AI AWM 338LM) an aggressive base cant is required. This is why S & B recommends the use of canted base (S & B refers to canted bases as <span style="font-style: italic">"forward angled"</span>) approximating half of the total elevation of the respective scope.
On a PMII 5-25X with 0.1 MIL adjustments this means a 45 MOA base, which - depending upon the geographic location/atmospheric conditions, may be close for a .308 at when zeroing at 100 yards. I have a Tac Ops Two-Piece 40 MOA base, and I have no problem zeroing at 100 yards and maintaining nearly the full elevation travel (I still have 26.4 MILs' of "UP", with 0.6 MIL <span style="font-style: italic">below "zero"</span>). Now before anyone chimes-in and asks if the reticle moves with <span style="font-style: italic">every</span> click - "Yes" it does. The reticle moves positively and smoothly with each click all the way to 26.4 MILs'.
Thats' not to say that a 45 MOA base is absolutely "needed". Most .308 loads will get out to 1,000 yards in 10 MILs, so for most people the full travel of a PMII 5-25X is "wasted" because the caliber winds up being the limiting factor.
However, <span style="font-style: italic">neo223</span> never mentioned the caliber or whether the action is Long or Short. A 40 or 45 MOA base covers most anything.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body">If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero. </div></div>
That is true - it <span style="font-style: italic">IS possible</span> that that <span style="font-style: italic">neo223</span> may not be able to get a 100 yard zero with a 45 MOA base, but <span style="font-style: italic">neo223</span> is mounting a PMII 5-25X on an M700 in an AICS, not a Hensoldt 4-16X on a 45 MOA base on a TRG42.
The two are very different scenarios and I think it will close at 100 yards with <span style="font-style: italic">neo223</span>'s geographic location and prevailing atmospheric conditions will play a factor here. Personally, I would opt for a base in the 30-40 MOA range.
Keith </div></div>
Great job Keith.
The rifle is a SA R700 in .308 with a Krieger barel.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Aries64</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: neo223</div><div class="ubbcode-body">Hey guys. I just ordered a Schmidt Bender 5-25x56 for an R700 on an AICS with 40 moa base. What Badger ring height do I need?
Are the 1" going to be low enough or should I change the base to a 20 moa?
Thanks in advance.</div></div>
Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for. If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero. </div></div>
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body">Just to clarify, getting the scope low to the barrel won't give you more elevation. It is the angle of the base that does this. And remember, you can only get as much elevation as the elevation adjustment of the scope will allow for.</div></div>
Mike, PMIIs' are adjusted <span style="font-weight: bold"><span style="font-style: italic">out-of-center UPWARD</span></span> at the S & B factory <span style="font-weight: bold">by half of the scope's total travel</span>, which in the case of a PMII 5-25X is 13.5 MILs'/135 0.1 MIL clicks. This is to provide upward Elevation bias for long range shooting. This means that the reticle sits pretty high inside the tube, and in order to be able to zero at closer range while still being able to get out to 2,000 meters (the PMII 5-25X was designed for use on the AI AWM 338LM) an aggressive base cant is required. This is why S & B recommends the use of canted base (S & B refers to canted bases as <span style="font-style: italic">"forward angled"</span>) approximating half of the total elevation of the respective scope.
On a PMII 5-25X with 0.1 MIL adjustments this means a 45 MOA base, which - depending upon the geographic location/atmospheric conditions, may be close for a .308 at when zeroing at 100 yards. I have a Tac Ops Two-Piece 40 MOA base, and I have no problem zeroing at 100 yards and maintaining nearly the full elevation travel (I still have 26.4 MILs' of "UP", with 0.6 MIL <span style="font-style: italic">below "zero"</span>). Now before anyone chimes-in and asks if the reticle moves with <span style="font-style: italic">every</span> click - "Yes" it does. The reticle moves positively and smoothly with each click all the way to 26.4 MILs'.
Thats' not to say that a 45 MOA base is absolutely "needed". Most .308 loads will get out to 1,000 yards in 10 MILs, so for most people the full travel of a PMII 5-25X is "wasted" because the caliber winds up being the limiting factor.
However, <span style="font-style: italic">neo223</span> never mentioned the caliber or whether the action is Long or Short. A 40 or 45 MOA base covers most anything.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: palmik</div><div class="ubbcode-body">If you use too much moa in your base, your zero will be further than you might want. I had a 45 MOA base on my trg42. It allowed me to get out past 2000 yds with my hensoldt 4-16, but my zero was around 500 yds cranked all the way down. I switched it out for a 25 MOA base so I could get a 100 yd zero. </div></div>
That is true - it <span style="font-style: italic">IS possible</span> that that <span style="font-style: italic">neo223</span> may not be able to get a 100 yard zero with a 45 MOA base, but <span style="font-style: italic">neo223</span> is mounting a PMII 5-25X on an M700 in an AICS, not a Hensoldt 4-16X on a 45 MOA base on a TRG42.
The two are very different scenarios and I think it will close at 100 yards with <span style="font-style: italic">neo223</span>'s geographic location and prevailing atmospheric conditions will play a factor here. Personally, I would opt for a base in the 30-40 MOA range.
Keith </div></div>
Great job Keith.
The rifle is a SA R700 in .308 with a Krieger barel.
Re: Schmidt Bender 5-25x56. What ring height?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Aries64</div><div class="ubbcode-body">Mike, PMIIs' are adjusted <span style="font-weight: bold"><span style="font-style: italic">out-of-center UPWARD</span></span> at the S & B factory <span style="font-weight: bold">by half of the scope's total travel</span>, which in the case of a PMII 5-25X is 13.5 MILs'/135 0.1 MIL clicks. This is to provide upward Elevation bias for long range shooting. This means that the reticle sits pretty high inside the tube, and in order to be able to zero at closer range while still being able to get out to 2,000 meters (the PMII 5-25X was designed for use on the AI AWM 338LM) an aggressive base cant is required. This is why S & B recommends the use of canted base (S & B refers to canted bases as <span style="font-style: italic">"forward angled"</span>) approximating half of the total elevation of the respective scope.
Keith </div></div>
I just got a PMII 5-25x56 DT mil/mil CCW LP P4F and am trying to figure it out. The manual says it has a total adjustment range of 300cm/100m (30 mils?) not 27. MY DT knobs have only 27 mils of adjustment but maybe there are 3 more mils hiding behind the stops?
And I am very confused about the reticle placement. here is a cut/paste of the manual:
4.2. Adjustment range and forward angle
Scopes for high precision shooting are often used for shooting at great
distances. In this case the elevation adjustment is used to compensate for bullet
drop. To provide an extensive elevation range in these scopes Schmidt &
Bender has increased the main tube diameter from 30mm to 34mm.
Nevertheless the elevation and windage range like in any other scope is limited.
In scopes for hunting the reticle is generally centered optically and mechanically
in order to receive the same amount of travel in all directions and to make the
mounting of the scope to the firearm easier (see picture 2).
In order to make the elevation adjustment range usable in its full extent it is
necessary to preset the reticle of the PMII scopes out of the center already at
the Schmidt & Bender factory (see picture 3). As a consequence the gunsmith
is obliged to consider the preset position of the reticle in the elevation range
when mounting the scope to the firearm (see picture 4). With this setup the full
elevation range is usable in one direction allowing to shoot at distances up to
2000m depending on the used calibre and scope type.
Determining the correct forward angle
The necessary forward angle is depending on the used type of elevation
adjustment. At the Schmidt & Bender factory the reticles of PMII scopes are
adjusted out of center by half the amount of the full elevation range. This value
must be compensated in the mount system.
Forward angled mounts or rails for every Schmidt & Bender PMII scope type
are available from all renowned mount manufacturers.
Why not leave the reticle centered and no need for a forward angle base? What benefit does the out of center reticle provide?
Thanks
Nick
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Aries64</div><div class="ubbcode-body">Mike, PMIIs' are adjusted <span style="font-weight: bold"><span style="font-style: italic">out-of-center UPWARD</span></span> at the S & B factory <span style="font-weight: bold">by half of the scope's total travel</span>, which in the case of a PMII 5-25X is 13.5 MILs'/135 0.1 MIL clicks. This is to provide upward Elevation bias for long range shooting. This means that the reticle sits pretty high inside the tube, and in order to be able to zero at closer range while still being able to get out to 2,000 meters (the PMII 5-25X was designed for use on the AI AWM 338LM) an aggressive base cant is required. This is why S & B recommends the use of canted base (S & B refers to canted bases as <span style="font-style: italic">"forward angled"</span>) approximating half of the total elevation of the respective scope.
Keith </div></div>
I just got a PMII 5-25x56 DT mil/mil CCW LP P4F and am trying to figure it out. The manual says it has a total adjustment range of 300cm/100m (30 mils?) not 27. MY DT knobs have only 27 mils of adjustment but maybe there are 3 more mils hiding behind the stops?
And I am very confused about the reticle placement. here is a cut/paste of the manual:
4.2. Adjustment range and forward angle
Scopes for high precision shooting are often used for shooting at great
distances. In this case the elevation adjustment is used to compensate for bullet
drop. To provide an extensive elevation range in these scopes Schmidt &
Bender has increased the main tube diameter from 30mm to 34mm.
Nevertheless the elevation and windage range like in any other scope is limited.
In scopes for hunting the reticle is generally centered optically and mechanically
in order to receive the same amount of travel in all directions and to make the
mounting of the scope to the firearm easier (see picture 2).
In order to make the elevation adjustment range usable in its full extent it is
necessary to preset the reticle of the PMII scopes out of the center already at
the Schmidt & Bender factory (see picture 3). As a consequence the gunsmith
is obliged to consider the preset position of the reticle in the elevation range
when mounting the scope to the firearm (see picture 4). With this setup the full
elevation range is usable in one direction allowing to shoot at distances up to
2000m depending on the used calibre and scope type.
Determining the correct forward angle
The necessary forward angle is depending on the used type of elevation
adjustment. At the Schmidt & Bender factory the reticles of PMII scopes are
adjusted out of center by half the amount of the full elevation range. This value
must be compensated in the mount system.
Forward angled mounts or rails for every Schmidt & Bender PMII scope type
are available from all renowned mount manufacturers.
Why not leave the reticle centered and no need for a forward angle base? What benefit does the out of center reticle provide?
Thanks
Nick
Re: Schmidt Bender 5-25x56. What ring height?
Put the scope on the rifle and zero it. The scope has tons of elevation. Stop worrying about bullshit like that.
Again another perfect place for one of Lowlight's classics:
"You guys could over complicate and ruin a blow job left to your own devices."
Put the scope on the rifle and zero it. The scope has tons of elevation. Stop worrying about bullshit like that.
Again another perfect place for one of Lowlight's classics:
"You guys could over complicate and ruin a blow job left to your own devices."
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