Range Report Need ballistic info please

[Flynn]

I'm needing dope for my 20" .308 TRG. I'm shooting 175 FGMM. I don't know my muzzle velocity. Anyone with a similar setup mind sharing their dope with me? The only two things I know are: I have a 200 yard zero and needed 3.7 mils to hit steel at 500 meters. Thanks in advance.

 

[ida83704]

Re: Need ballistic info please

Assuming you are shooting at Parma and you scope tracks true...

Back calcing it, your MV is approx 2500fps


27.5Hg.
59F
0% humidity
Ballistic Coefficients: 0.485 [0-1800], 0.496 [1800-2800], 0.505 [2800-5000] G1

 

[Nimzoblanca]

Re: Need ballistic info please

I don't have any dope for you, but I can tell you that 175g FGMM out of my 20" bbl chronos at 2575 fps. Given that and using JBM's online trajectory calculator, you should be able to come up with some dope charts.

 

[Flynn]

Re: Need ballistic info please

I do shoot at Parma!

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ida83704</div><div class="ubbcode-body">Assuming you are shooting at Parma and you scope tracks true...

Back calcing it, your MV is approx 2500fps


27.5Hg.
59F
0% humidity
Ballistic Coefficients: 0.485 [0-1800], 0.496 [1800-2800], 0.505 [2800-5000] G1


</div></div>

 

[TimK]

Re: Need ballistic info please

I emailed some dope to you directly because I couldn't figure out how to cut and paste it into my reply without losing all the formatting. Let me know if you don't get it.