MemberDecember 11, 2016 at 2:33 am21 Bullseyes
Dog is correct, (lol no surprise), do the 7mm mag and work up the loads…
Of course you cannot use the new Berger 195 7mm ( or whatever the new long range 7 is)
You need to look at a good bullet company and what will stabilize in your barrel.
Any other questions that we can answer?