I have switched from Hornady brass to Gunwerks brass. I ha e been loading 42gr Rl17 behind 140 berger in Hornady brass. The brass weighs about 148gr. This load has consistently shot 1/2 min at 600.
I loaded the same load in Gunwerks brass that weighs 168gr. My group opened up from 1/2moa to over 1 moa.
Yes the speed went up because of the heavier brass I suspect.
Has anyone else had this problem? Should I just shoot smaller loads in the gunwerks brass until I come up with the same speed as the Hornady brass?
Thanks
I loaded the same load in Gunwerks brass that weighs 168gr. My group opened up from 1/2moa to over 1 moa.
Yes the speed went up because of the heavier brass I suspect.
Has anyone else had this problem? Should I just shoot smaller loads in the gunwerks brass until I come up with the same speed as the Hornady brass?
Thanks