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What Barrel Length on Your Grendel AR(s)?

Poll: What Barrel Length on Your Grendel AR(s)?
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10"
1.17%
 5 1.17%
12"
6.57%
 28 6.57%
14"
1.64%
 7 1.64%
16"
17.84%
 76 17.84%
18"
25.59%
 109 25.59%
20"
29.81%
 127 29.81%
22"
3.99%
 17 3.99%
24"
12.91%
 55 12.91%
26"
0.47%
 2 0.47%
Total 426 vote(s) 100%
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What Barrel Length on Your Grendel AR(s)?
jnr2233 Offline
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Joined: Aug 2018
#69
08-12-2018, 07:00 PM
grayfox Wrote:His explanation below the graph says he is using standard atmospheric conditions... sea level= 29.53 inHg, 59* F.....

Ok I used the above pressure and temperature assumptions with the hornady 123sst at 2580 FPS muzzle velocity in strelok and it’s showing the round going subsonic before 900 yards. I’m using the “cartridge database” in strelokpro for the g7 coefficient. Not sure what could be causing the difference here.
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Messages In This Thread
What Barrel Length on Your Grendel AR(s)? - by LRRPF52 - 08-24-2014, 08:19 PM
What Barrel Length on Your Grendel AR(s)? - by jnr2233 - 08-12-2018, 07:00 PM

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