Looking for feedback on 300 Win Mag vs. .338 Lapua. I'm looking for an Armalite AR-30 in 338 LM, but have not been able to find one at a good price. As such I have been considering one in 300 WM instead. I've looked at the ballistic charts for both loads, and am impressed by the 338 (not to mention that I would be the first kid on the block with one) but really how much difference would there be in accuracy potential at say 1500 yards ? I will roll my own with either cartridge, but one benefit of the 300WM is that if needed, I could find ammo nearly anywhere. And the fact that there are currently 300 WM AR-30's available. BTW, not intending on hunting with the gun (except maybe hogs and the occasional praire dog) but puching paper and ringing metal. Thanks for any input.