Re: help with 7mm-300wby
I'll help, buy some 180 bergers and run them at about 3150. The 140 bergers are not tumbling, your riping them apart, the core is seperating from the jacket, they were designed to go through an 11 twist at 3300fps or less not a 9 twist at 3850. The accubonds you were shooting have a much thicker jacket and a bonded core. There is no need in a 9 twist unless your shooting 175-190grn bullets.