A hunting buddy of mine tried Hornady's Superformance ammo in two different rifles a semi-auto 338 Win and a bolt 30-06 accuracy suffered terribly in both. He was told hornady makes some bullets smaller in dia. than other manufcturers and this could be the cause of inaccuracy. Has anyone heard of this smaller dia. bullets? I have several types and sizes of hornady bullets and they all measure the correct dia. for caliber in fact all the brands I have measure correct for caliber.