Hi guys, I'm just about to order a Gap rifle in 300 win mag and was wondering if anyone knows what reamer they use? Mainly because I want to shoot 165-215 grain bullets. I live in California and have to shoot lead free in dfg land. I want to shoot Barnes and Berger bullets up to maybe 215. Is this possible? I do reload but if able to find good factor ammo that shoots will use. The rifle is a gap non typical Templar action 26" bartlin 3b micro bastard break 1.5 lbs Timmy trigger and B&C stock with a Nxs 5.5-22-56 moa scope with a 20 moa base. Thanks for the help. Jason