Hello all. I was wondering if anyone out there is currently handloading the .338 Lapua Magnum for the McMillan Tac-338? I am currently trying a few different powders, but so far, I'm still not quite able to achieve 1/2" moa at 100 yards. I am currently loading 250 gr.FMJBT LAPUA projectiles. I am getting ready to try some Sierra Matchkings. I was also thinking about trying some 300 grain projectiles in Lapua and Sierra as well. Any ideas or comments would be greatly appreciated. Thanks everyone.