Why is it that Lapua match 6mmBr ammo is 2.331 OAL. And on this web site they call out 2.4409 as the OAL. Thats .109 differance. Considering everyone is focused on "X" number of thousands off the lands, it's confusing me. Is Lapua backing off .109 or is the 2.4409 as suggested way off? I'm a newbe, just wondering?