69 grains of Rl26 in a 26 inch tube should spit a 180 eldm at 3050 fps plus or minus 30 fps
Type: Posts; User: Gkp
69 grains of Rl26 in a 26 inch tube should spit a 180 eldm at 3050 fps plus or minus 30 fps
Hi guys, this caliber sounds like the way forward. I am thinking about building one of these and was wanting to know the following from those shooting the 7BM:
Barrel length?
Twist rate?...