I've shot them with several calibers...from .30 Carbine to 300 RUM in 30 cal, little 6mm/47mm wildcat, 6mm/284, 240 Wby, 220 Swift, .280, 7mm RM, 257 Wby, 25-06, 7mm/08, 6.5/284. Of all these, I find I tend to "favor" any round that is based or equivalent to '06 capacity/speed. I just find, to me, they kill better/faster, shoot flatter.
