Flybuster, Crapshoot was running a 60gr. bullet in his. To tell you the truth, this was the 1st time I ever really gave "cross sectional density" any thought. I mean, 60 grains is 60 grains, right? Apparently 60 grains of 223 vs 60 grains of 6mm isn't the same. This has started a heck of a learning experience for me...