News flash. A big percentage of the members here have figured out the relationship between twist rate, bullet weight and mag box and chamber dimensions a long time ago. But there is some comic relief listening to those thinking they're some kind of messiah on all this. lmao And I'll go right out on a limb here and guess that every rifle maker has knowledge of this as well smirk The question is do they want to sell for factory ammo and Joe six pack (biggest % of the market) or include those that want to squeeze what they can out of the package via their handloads. These guys obviously are at least asking the questions of the later. Good on them.