I have a 7mm Rem Mag with a barrel twist at 1 in 9.5. What is the ideal weight for this twist? I have AR-15s in 1-7, 1-8, and 1-9 and have all of them figured out. Lots of good info out about for ARs and barrel twist. But I have never heard much about larger cals particularly 7mm RM. As always, thanks for any help.