6/284 30" brux bbl 8"twist . Today shooting 105gr Berger Hybrids seated just off the rifling lands , burning two powders Re# 25 and Magpro . I was getting tight ES in velocities (10'20' between shots) with both powders but poor accuracy in this new chamber( Non neck turning chamber). Others have said Re#22 is the go to powder for this cartridge ?
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