02-21-2024, 02:58 PM
(This post was last modified: 02-21-2024, 03:09 PM by Diesel Pro.)
I bought a pound of AR Comp to work up for my 6ARC as well as 223/556. Problem is, it's lacking velocity big time in both calibers. Not even close to what QL predicts. QL is pretty spot on with other powders that I have tried. When I ran Comp in my 22" 6arc my speeds were in the 2300-2400 when predicted 2800+
Comparing Comp to 8208 in my 223 60gr NBT Rem 1-1/2 primer Springfield Saint Victor 16" Outside temps low 40's
24.2 grains Comp nets 2479 average with ES of 117. QL predicts 2895 so 400 short of prediction
24.2 grains 8208 nets 2705 average with ES of 54.8 QL predicts 2760 only 55 short of prediction
Note: the 8208 3 round string had 2 of 3 within 1 fps of each other 2686.9 and 2687.9
About all I can think of is a bad lot or a bad bottle. My 8208 is from an 8# jug that is well over 10 yrs old.
Comparing Comp to 8208 in my 223 60gr NBT Rem 1-1/2 primer Springfield Saint Victor 16" Outside temps low 40's
24.2 grains Comp nets 2479 average with ES of 117. QL predicts 2895 so 400 short of prediction
24.2 grains 8208 nets 2705 average with ES of 54.8 QL predicts 2760 only 55 short of prediction
Note: the 8208 3 round string had 2 of 3 within 1 fps of each other 2686.9 and 2687.9
About all I can think of is a bad lot or a bad bottle. My 8208 is from an 8# jug that is well over 10 yrs old.