6mm Arc 18 Inch Barrel Velocity, 5 Grendel, 9mm, 350 Legend, 450 Bushmaster, and . 56 NATO, . Brass longevity and easy case forming (either from direct factory brass or forming from 6. 5 Grendel parent cases) add to its appeal for reloaders. Depending on the ammo load, you can achieve muzzle velocities between 2330 and 2575 feet per second, which is more than enough to take down 500-yard targets. Build for velocity, balance, or precision with our selection of AR15 Barrels made for experienced shooters, armorers, and gunsmiths who care about chamber, profile, dwell time, and long-term service life. I have 600 rounds 105gr Hornady Black ammo on hand. Still getting a significant pop of gas to the right eye. Feb 15, 2023 · For you guys shooting 16" and 18" bolt action rifles chambered in 6mm ARC, what velocity did you get with Hornady's 108ELD factory loaded offering? 105g Hornady Black data points welcomed too. Thanks, Preston Feb 25, 2024 · I've got a Centurion 18" 6mm ARC barrel on order. soip, tc8bf, gjsv9y, a8b9, h7o4, rxfmvr, 9garkt, 4wxhc, ekdkdz, h6id,