Like the title say i was curious of my load and what i will need in to know what kinda elevation i will need. my load is really about 2650 with a 175 bullet 22 in bbl (if needed). I live in AL so not too far above sea level either.
- Thread starter shooter308
- Start date
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
Just punch in your info
http://www.handloads.com/calc/
Just punch in your info
http://www.handloads.com/calc/
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
Or use JBM.... Id stick with JBM
Or use JBM.... Id stick with JBM
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
If you are running 175smk's you may want to invest in one of these.
http://www.actsvirginia.com/sliderule.php
I got one and it has been with in +/- .5 moa if not spot on. Works well with 168 grain berger vld's too as the bc is a near perfect match to the 175smk.
But to answer your question 36-40 moa at 1k depending on weather and your location for 2650fps
If you are running 175smk's you may want to invest in one of these.
http://www.actsvirginia.com/sliderule.php
I got one and it has been with in +/- .5 moa if not spot on. Works well with 168 grain berger vld's too as the bc is a near perfect match to the 175smk.
But to answer your question 36-40 moa at 1k depending on weather and your location for 2650fps
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
Ballistics FTE
Ballistics FTE
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
It's no where near 30 MOA. You will be dumping rounds in the dirt. From JBM:
Trajectory
Input Data
Manufacturer: Sierra Description: HPBT MatchKing™
Caliber: 0.308 in Weight: 175.0 gr
Ballistic Coefficients: 0.485 [0-1800], 0.496 [1800-2800], 0.505 [2800-5000] G1
Muzzle Velocity: 2650.0 ft/s Distance to Chronograph: 13.0 ft
Sight Height: 1.90 in Sight Offset: 0.00 in
Zero Height: 0.00 in Zero Offset: 0.00 in
Windage: 0.000 MOA Elevation: 0.000 MOA
Line Of Sight Angle: 0.0 deg Cant Angle: 0.0 deg
Wind Speed: 10.0 mph Wind Angle: 90.0 deg
Target Speed: 2.0 mph Target Angle: 90.0 deg
Target Height: 12.0 in
Temperature: 80.0 °F Pressure: 29.92 in Hg
Humidity: 60.0 % Altitude: 100.0 ft
Vital Zone Radius: 8.0 in
Std. Atmosphere at Altitude: No Pressure is Corrected: Yes
Zero at Max. Point Blank Range: No Target Relative Drops: Yes
Mark Sound Barrier Crossing: No Include Extra Rows: No
Column 1 Units: 1.00 MOA Column 2 Units: 1.00 mil
Round Output to Whole Numbers: No
Output Data
Elevation: 4.272 MOA Windage: 0.000 MOA
Atmospheric Density: 0.07265 lb/ft³ Speed of Sound: 1138.9 ft/s
Maximum PBR: 398 yd Maximum PBR Zero: 338 yd
Range of Maximum Height: 185 yd Energy at Maximum PBR: 1564.2 ft•lbs
Sectional Density: 0.264 lb/in²
Calculated Table
Range Drop
(yd) (MOA)
0 ***
100 0
200 -1.8
300 -4.4
400 -7.6
500 -11.1
600 -15
700 -19.5
800 -24.5
900 -30.1
1000 -36.4
Go here and drop in your info for more specific data
http://www.jbmballistics.com/cgi-bin/jbmtraj_simp-5.1.cgi
It's no where near 30 MOA. You will be dumping rounds in the dirt. From JBM:
Trajectory
Input Data
Manufacturer: Sierra Description: HPBT MatchKing™
Caliber: 0.308 in Weight: 175.0 gr
Ballistic Coefficients: 0.485 [0-1800], 0.496 [1800-2800], 0.505 [2800-5000] G1
Muzzle Velocity: 2650.0 ft/s Distance to Chronograph: 13.0 ft
Sight Height: 1.90 in Sight Offset: 0.00 in
Zero Height: 0.00 in Zero Offset: 0.00 in
Windage: 0.000 MOA Elevation: 0.000 MOA
Line Of Sight Angle: 0.0 deg Cant Angle: 0.0 deg
Wind Speed: 10.0 mph Wind Angle: 90.0 deg
Target Speed: 2.0 mph Target Angle: 90.0 deg
Target Height: 12.0 in
Temperature: 80.0 °F Pressure: 29.92 in Hg
Humidity: 60.0 % Altitude: 100.0 ft
Vital Zone Radius: 8.0 in
Std. Atmosphere at Altitude: No Pressure is Corrected: Yes
Zero at Max. Point Blank Range: No Target Relative Drops: Yes
Mark Sound Barrier Crossing: No Include Extra Rows: No
Column 1 Units: 1.00 MOA Column 2 Units: 1.00 mil
Round Output to Whole Numbers: No
Output Data
Elevation: 4.272 MOA Windage: 0.000 MOA
Atmospheric Density: 0.07265 lb/ft³ Speed of Sound: 1138.9 ft/s
Maximum PBR: 398 yd Maximum PBR Zero: 338 yd
Range of Maximum Height: 185 yd Energy at Maximum PBR: 1564.2 ft•lbs
Sectional Density: 0.264 lb/in²
Calculated Table
Range Drop
(yd) (MOA)
0 ***
100 0
200 -1.8
300 -4.4
400 -7.6
500 -11.1
600 -15
700 -19.5
800 -24.5
900 -30.1
1000 -36.4
Go here and drop in your info for more specific data
http://www.jbmballistics.com/cgi-bin/jbmtraj_simp-5.1.cgi
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
Thanks so much fellows
Thanks so much fellows
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
Since reading this thread, I have learned that the OP will need between 30 & 39.7 MOA to get to 1000. That's a POI variance of about 8 feet.
Hope the he brings a large target...
-Chris
Shooter308,
Please report back with real world results. It will make for an interesting comparison.
Since reading this thread, I have learned that the OP will need between 30 & 39.7 MOA to get to 1000. That's a POI variance of about 8 feet.
Hope the he brings a large target...
-Chris
Shooter308,
Please report back with real world results. It will make for an interesting comparison.
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
Having used and trusted JBM for years and also shooting almost that same load, 2700fps 178 AMAX took 35.5 MOA, to 1000 I am betting that the 36.5 MOA will get him very close if his scope tracks correctly.
Having used and trusted JBM for years and also shooting almost that same load, 2700fps 178 AMAX took 35.5 MOA, to 1000 I am betting that the 36.5 MOA will get him very close if his scope tracks correctly.
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
I'm a dedicated JBM user too. Just thought the variance in suggestions was worth noting. Also worth noting is that you successfully competed last weekend. I assume you did so using verified data from JBM.
-Chris
I'm a dedicated JBM user too. Just thought the variance in suggestions was worth noting. Also worth noting is that you successfully competed last weekend. I assume you did so using verified data from JBM.
-Chris
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cavemanmoore</div><div class="ubbcode-body"> I assume you did so using verified data from JBM.
-Chris </div></div>
As I have for years
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cavemanmoore</div><div class="ubbcode-body"> I assume you did so using verified data from JBM.
-Chris </div></div>
As I have for years
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cavemanmoore</div><div class="ubbcode-body"> I assume you did so using verified data from JBM.
-Chris </div></div>
As I have for years </div></div>
Let's have a round of applause for the Oregon Snipers Challenge "Top Long Range Shoooooteerrr!!"
Sorry Rob01, still no prize for it though
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cavemanmoore</div><div class="ubbcode-body"> I assume you did so using verified data from JBM.
-Chris </div></div>
As I have for years
Let's have a round of applause for the Oregon Snipers Challenge "Top Long Range Shoooooteerrr!!"
Sorry Rob01, still no prize for it though
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
Spent some time shooting last night. This thread got me thinking about making elevation adjustments and why we get varied results. Rob01 uses <span style="text-decoration: underline">[/u] verified</span> JBM information. I believe verified is the key. I've used the same Nightforce for years, believing that it was totally reliable, just because it was a Nightforce. Pictured is a target we shot last night. The string of holes on the right is mine. The horizontal lines are exactly 2 MOA apart. At 100 yards (where the target was placed), my POI is 1.5 MOA high. I dialed up 2 MOA, on my scope, between every round.
The lesson I learned is that real world verification is absolutely critical. I can't help but wonder how many of us build a chart based on our known FPS and think we are GTG, when we are not.
Any one else experience similar results?
-Chris
Spent some time shooting last night. This thread got me thinking about making elevation adjustments and why we get varied results. Rob01 uses <span style="text-decoration: underline">[/u] verified</span> JBM information. I believe verified is the key. I've used the same Nightforce for years, believing that it was totally reliable, just because it was a Nightforce. Pictured is a target we shot last night. The string of holes on the right is mine. The horizontal lines are exactly 2 MOA apart. At 100 yards (where the target was placed), my POI is 1.5 MOA high. I dialed up 2 MOA, on my scope, between every round.
The lesson I learned is that real world verification is absolutely critical. I can't help but wonder how many of us build a chart based on our known FPS and think we are GTG, when we are not.
Any one else experience similar results?
-Chris
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body">if his scope tracks correctly. </div></div>
That is why I added that caveat at the end of my post. New scopes should always be tested to check tracking no matter the maker. I check every scope I get even my S&Bs.
Good info. Hopefully it will open some eyes.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Rob01</div><div class="ubbcode-body">if his scope tracks correctly. </div></div>
That is why I added that caveat at the end of my post. New scopes should always be tested to check tracking no matter the maker. I check every scope I get even my S&Bs.
Good info. Hopefully it will open some eyes.
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
just to throw it in there , using a fdac with the 2650 card, and with a temp of 80f and an altitude of below 1000ft you get a DA of 1500 on the estimation table. fdac says you should be about 37 moa in the +1k window and 36.3 moa in the +2k window so half way between both would give you about 36.7moa which is pretty much what Rob01 said with jbm.
just an edit to add that i use the meters model fdac, and with 1000 yards being 914 meters i read from the 900m window. i have found the fdac accurate to .2mil or so out to 1000m with my 308
just to throw it in there , using a fdac with the 2650 card, and with a temp of 80f and an altitude of below 1000ft you get a DA of 1500 on the estimation table. fdac says you should be about 37 moa in the +1k window and 36.3 moa in the +2k window so half way between both would give you about 36.7moa which is pretty much what Rob01 said with jbm.
just an edit to add that i use the meters model fdac, and with 1000 yards being 914 meters i read from the 900m window. i have found the fdac accurate to .2mil or so out to 1000m with my 308
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
takes me about 39.5
takes me about 39.5
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cavemanmoore</div><div class="ubbcode-body">Since reading this thread, I have learned that the OP will need between 30 & 39.7 MOA to get to 1000. That's a POI variance of about 8 feet. </div></div>
It actually toped out at 42 but that is pretty funny.
okie
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: cavemanmoore</div><div class="ubbcode-body">Since reading this thread, I have learned that the OP will need between 30 & 39.7 MOA to get to 1000. That's a POI variance of about 8 feet. </div></div>
It actually toped out at 42 but that is pretty funny.
okie
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BDD</div><div class="ubbcode-body">it takes me 37.5 moa
and my buddy 35.5 moa with the same gun
go figure </div></div>
Must be nice to be the kind of person who increases the BC of a given bullet by just being themselves...
Respectfully Skeptical,
-Chris
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BDD</div><div class="ubbcode-body">it takes me 37.5 moa
and my buddy 35.5 moa with the same gun
go figure </div></div>
Must be nice to be the kind of person who increases the BC of a given bullet by just being themselves...
Respectfully Skeptical,
-Chris
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
I was running right at 38MOA with the 175's. I recently cut my barrel down from 26" to 18" so everything will be different now although it really won't matter as I will not shoot 1k with the 18" barrel....Decided to take that gun subsonic.
I was running right at 38MOA with the 175's. I recently cut my barrel down from 26" to 18" so everything will be different now although it really won't matter as I will not shoot 1k with the 18" barrel....Decided to take that gun subsonic.
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PMac</div><div class="ubbcode-body">The answer to your question is roughly 30moa. It will vary and for that length of barrel maybe 33moa but that will get you close. </div></div>
Where the shit did you get that info???
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: PMac</div><div class="ubbcode-body">The answer to your question is roughly 30moa. It will vary and for that length of barrel maybe 33moa but that will get you close. </div></div>
Where the shit did you get that info???
Re: SHooting 2600 FPS with a 308 how many MOA to 1k
I shoot 175gr SMK @ 2650fps. Calculations @ sealevel, come out to be 39.9 moa at 50F & 38.4 moa at 90F.
Where do you shoot in B'ham, i used to live there.
I shoot 175gr SMK @ 2650fps. Calculations @ sealevel, come out to be 39.9 moa at 50F & 38.4 moa at 90F.
Where do you shoot in B'ham, i used to live there.
