I don't understand the problems we have with loading sabots, like TC Shockwaves vs Powerbelts, and everything else in between. If a projectile, made for a .50 cal, loads in one gun, it should load in any .50 cal. You don't see this kind of "leeway" in barrels in centerfire rifles, do you? I don't have to pound different 30.06 shells into my rifle.[>:] These companies must be aware of this, don't they care? I mean, a .50 cal barrel is a .50 cal barrel!