Dear Sir,
Receintly purchased a 7mm SAUM from JiM See and am currently working up some loads, talked to Jim and he advised to view some of your posts. Anyway I am shooting a Brux Rem. Varmit Barrel Bourden Alpine action on top of a McMillan A-5.
Worked up H1000 at 65.9 grains getting approx. 2898 to 2923.
H4831 sc seems to be quite a bit slower; 60 grains right around 2773.
Any experiance and sugestions with either, Jim advised the barrel will begin to speed up after a 100 rounds or so? I have approx 50 to 60 through it now. Did you have this happen to your barrel? If so, how much did it speed up?
Any and all advise will be greatly used, Best Regards, Michigan Chris.