I was using the factory mags, but in Canada, those are the Accurate mags. I switched to AI mags because I had unreliable feeding with the bolt not picking up the round on occasion. Never a problem with the AI. I recently purchased a PMag AICS pattern mag and it has just a little less space...
Just outside that range, I have put 2-300 Lapua 123gr Scenars down range and I was getting velocities just over 3000 fps and 10 round groups right at 1 moa. It was fine, but mine prefers the 140 Berger hyprid, with groups shrinking to .8 moa at 2750fps.
Stability is only one aspect of...
It wouldn't be a cheap project, but when you consider the price of a second high end optic, chassis and new barrel for my Tikka, a few days custom work by a gunsmith to modify a few mags and a new bolt would be money well spent.
Thanks for the replies. I figured it might not be easy or there would have already been a dozen threads on the best way to go about it. The 22-250 is a nice idea, but the whole point of my endeavour was to use all the .223 cases and data I already have from wearing out the barrel on my Tikka...