06-04-2022, 07:02 PM
mblackmon4 Wrote:Harpoon Ive been reading some of your load development and that got me excited for mine. 3000fps is what the book says 33.9gr gets with a 20 ar15. Im at 5000 feet elevation using a labradar with 15% humidity and 75 degrees getting 2850 fps with a 16 barrel suppressed.
I have 200 90gr TNT to try after I burn all these lol.
Sounds good! What length Can are you using? Have you shot it unsuppressed with the same load to see what speed difference is?