on a nightforce bench rest scope what are they a sfp scope?was wondering,if its sighted in say at 200 yrds or 100,does changing the variable power change the poi some?or does it stay where you set it at?
Rifle Scopes scope ffp or sfp?
- Thread starter kluxman45
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Re: scope ffp or sfp?
Changing the magnification power will not shift the POI. If any scope did that, nobody would buy it. That also has nothing to do with what focal plane the reticle is on.
As to your question why are benchrest scopes SFP, that is because benchrest shooters desire as fine of an aiming point as possible with high magnification.
A FFP reticle stays the same angular size in relation to the target regardless of the magnification setting. In simple terms it looks like the reticle gets bigger when you zoom in, but it actually still covers the same distance across your target regardless of the magnification setting.
A SFP reticle remains the same size measurement wise when you zoom in. In other words, the reticle appears the same size on low power or high power setting. That way when you zoom in, the reticle still presents a fine wire aiming point.
Changing the magnification power will not shift the POI. If any scope did that, nobody would buy it. That also has nothing to do with what focal plane the reticle is on.
As to your question why are benchrest scopes SFP, that is because benchrest shooters desire as fine of an aiming point as possible with high magnification.
A FFP reticle stays the same angular size in relation to the target regardless of the magnification setting. In simple terms it looks like the reticle gets bigger when you zoom in, but it actually still covers the same distance across your target regardless of the magnification setting.
A SFP reticle remains the same size measurement wise when you zoom in. In other words, the reticle appears the same size on low power or high power setting. That way when you zoom in, the reticle still presents a fine wire aiming point.
Re: scope ffp or sfp?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Redmanss</div><div class="ubbcode-body">Changing the magnification power will not shift the POI. If any scope did that, nobody would buy it. That also has nothing to do with what focal plane the reticle is on.
As to your question why are benchrest scopes SFP, that is because benchrest shooters desire as fine of an aiming point as possible with high magnification.
A FFP reticle stays the same angular size in relation to the target regardless of the magnification setting. In simple terms it looks like the reticle gets bigger when you zoom in, but it actually still covers the same distance across your target regardless of the magnification setting.
A SFP reticle remains the same size measurement wise when you zoom in. In other words, the reticle appears the same size on low power or high power setting. That way when you zoom in, the reticle still presents a fine wire aiming point. </div></div>
Very well said.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Redmanss</div><div class="ubbcode-body">Changing the magnification power will not shift the POI. If any scope did that, nobody would buy it. That also has nothing to do with what focal plane the reticle is on.
As to your question why are benchrest scopes SFP, that is because benchrest shooters desire as fine of an aiming point as possible with high magnification.
A FFP reticle stays the same angular size in relation to the target regardless of the magnification setting. In simple terms it looks like the reticle gets bigger when you zoom in, but it actually still covers the same distance across your target regardless of the magnification setting.
A SFP reticle remains the same size measurement wise when you zoom in. In other words, the reticle appears the same size on low power or high power setting. That way when you zoom in, the reticle still presents a fine wire aiming point. </div></div>
Very well said.
Re: scope ffp or sfp?
The FFP scopes are better at one thing. Holdovers using so many mils or moas above the target, and this is the main point: YOU CAN DO THE SAME MIL OR MOA MARKS HOLDOVER AT ANY POWER.
You can do holdovers with a SFP, its just that a mil is a mil and an moa is an moa only at ONE setting (usually full magnification) and the tactical exercises usually call for holdovers of fairly close targets and you don't want to be at full magnification for those shots. So advantage FFP for close targets at lower magnification.
What you lose with FFP is the fine reticle at long distance. You also lose the ability to CHANGE THE RELATIVE SIZE of your mil or moa marks (a one mil mark is 2 mils at 1/2 the magnification you see). Although most people don't do this much it also allows some nifty tricks (like changing mils into moas and doing 'special milling' at specific magnification). Anyway, its a tradeoff and a marketing thing, the latest a greatest scopes have FFP.
Is FFP better? Just how much holdover do you plan on doing? Do you want the fine reticle at max power? Do you want to pay more for FFP? You decide.
The FFP scopes are better at one thing. Holdovers using so many mils or moas above the target, and this is the main point: YOU CAN DO THE SAME MIL OR MOA MARKS HOLDOVER AT ANY POWER.
You can do holdovers with a SFP, its just that a mil is a mil and an moa is an moa only at ONE setting (usually full magnification) and the tactical exercises usually call for holdovers of fairly close targets and you don't want to be at full magnification for those shots. So advantage FFP for close targets at lower magnification.
What you lose with FFP is the fine reticle at long distance. You also lose the ability to CHANGE THE RELATIVE SIZE of your mil or moa marks (a one mil mark is 2 mils at 1/2 the magnification you see). Although most people don't do this much it also allows some nifty tricks (like changing mils into moas and doing 'special milling' at specific magnification). Anyway, its a tradeoff and a marketing thing, the latest a greatest scopes have FFP.
Is FFP better? Just how much holdover do you plan on doing? Do you want the fine reticle at max power? Do you want to pay more for FFP? You decide.
Re: scope ffp or sfp?
Along these lines...I have several NF scopes in different flavors, all SFP. Can anyone tell me (for example) on the 3.5-15x50 at approximately what mag the reticle of the F1 version appears to be the same size to the eye as the reticle on the SFP version looks all the time? Just curious.
Along these lines...I have several NF scopes in different flavors, all SFP. Can anyone tell me (for example) on the 3.5-15x50 at approximately what mag the reticle of the F1 version appears to be the same size to the eye as the reticle on the SFP version looks all the time? Just curious.
Re: scope ffp or sfp?
gstaylorg NF SFP scopes are set to max magnification in order to use a mil based reticle for ranging. So 15x on a 3-15 and 22x on 5.5-22.
I have never used an F1, but with the reason stated above i would expect the reticle to be rather fine on lower mags in an F1 and approach an SFP reticle size toward the higher magnifications.
gstaylorg NF SFP scopes are set to max magnification in order to use a mil based reticle for ranging. So 15x on a 3-15 and 22x on 5.5-22.
I have never used an F1, but with the reason stated above i would expect the reticle to be rather fine on lower mags in an F1 and approach an SFP reticle size toward the higher magnifications.
Re: scope ffp or sfp?
POI will not shift you just can not use the reticle as it was intended.
Mike @ CST
POI will not shift you just can not use the reticle as it was intended.
Mike @ CST
Re: scope ffp or sfp?
on this nightforce scope i have,its a benchrest 8x32x56 so wouldnt setting the magnifacation all the way up would be best setting the range for the rifle?say 200 yrds?this way your next shot when looking through the scope you can get the rectical exactly where it was when ya first fired the first shot.your not all over the one inch target wondering if this is where the rectical was or was it?a 64th of a inch movement off target you cant tell with the eye,so thats why the groups open up some.this way a high mag.you can put the retical right back where it was.is something wrong with that?am i missing out on something still?rifle is in a leadsled.
on this nightforce scope i have,its a benchrest 8x32x56 so wouldnt setting the magnifacation all the way up would be best setting the range for the rifle?say 200 yrds?this way your next shot when looking through the scope you can get the rectical exactly where it was when ya first fired the first shot.your not all over the one inch target wondering if this is where the rectical was or was it?a 64th of a inch movement off target you cant tell with the eye,so thats why the groups open up some.this way a high mag.you can put the retical right back where it was.is something wrong with that?am i missing out on something still?rifle is in a leadsled.
Re: scope ffp or sfp?
Shooting off of your rest, then likely yes, a higher power would be best. Maybe not the highest power, but that depends on your target, conditions such as mirage, etc. The real goal is to aim at the same point for each and every shot. If you're still getting drift, then look at the load, your trigger squeeze, the rifle itself, or many other conditions could be in play.
As for zero distance, start at 100. There will be virtually no wind effect at that range. Then you can use your elevation to adjust from there.
Shooting off of your rest, then likely yes, a higher power would be best. Maybe not the highest power, but that depends on your target, conditions such as mirage, etc. The real goal is to aim at the same point for each and every shot. If you're still getting drift, then look at the load, your trigger squeeze, the rifle itself, or many other conditions could be in play.
As for zero distance, start at 100. There will be virtually no wind effect at that range. Then you can use your elevation to adjust from there.
Re: scope ffp or sfp?
older 3x18x42 illumanated is this ffp or sfp IOR 35MM SCOPE HAS CAPS OVER TURRETS
older 3x18x42 illumanated is this ffp or sfp IOR 35MM SCOPE HAS CAPS OVER TURRETS
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