08-15-2020, 01:48 AM
I think 6.5 twist would be too fast at the velocities I can run.
Even a 7 twist will spin 88 ELDM 8k+ more rpm than what Hornady suggest....so jacket failure could be a problem.
Doubtful until throat gets eroded/barrel gets rough as lots of guys run them at higher velocities/rpm than what I will be but Hornady says to keep them under 300k rpm.
I could slow them down but then would lose load density/consistency. 7 twist should be optimum.... math says so anyways , proof is always on target though.
Will be putting together a fireforming rifle on a mauser 98 action and an old 14 twist 223 takeoff to save on rds through good barrels.
With Norma brass I am pretty comparable to 22 BR capacity/performance so should get comparable barrel life 2 to 3000 rnds with the heavy bullets, more in AR platform as will be slower/lower pressures.
Even a 7 twist will spin 88 ELDM 8k+ more rpm than what Hornady suggest....so jacket failure could be a problem.
Doubtful until throat gets eroded/barrel gets rough as lots of guys run them at higher velocities/rpm than what I will be but Hornady says to keep them under 300k rpm.
I could slow them down but then would lose load density/consistency. 7 twist should be optimum.... math says so anyways , proof is always on target though.
Will be putting together a fireforming rifle on a mauser 98 action and an old 14 twist 223 takeoff to save on rds through good barrels.
With Norma brass I am pretty comparable to 22 BR capacity/performance so should get comparable barrel life 2 to 3000 rnds with the heavy bullets, more in AR platform as will be slower/lower pressures.