65creedmoor- all shooting 41.6 H4350 and 139s
Barrel one- Lothar heavy varmint 1/8.5 twist. Shot over 4k rounds through it, suspect it died around 3500 but didnt know what to look for at the time
#2- Rock MTU 1/8 twist- around 2500 before it was bleeding velocity. Still shot tight just way...