A while back I decided I wanted to try some plain ol' Sierras in a 270. I called the Sierra tech line and asked which was generally more accurate, the Pro Hunter or the GameKing. After a lot of crawfishing, and "you never know til you try in your gun" type comments, he finally said that the Pro Hunter will GENERALLY be more accurate.

That, plus the fact that Sierra says the Pro Hunter is a little "tougher" and the fact that the slightly better BC of the GK is not important at the ranges I shoot, caused me to choose the Pro Hunter.

...and accurate it is!