six,
i use them with the remington 416, mostly for practice. load them to 2650 or speers' starting load. accuracy is plenty good for hunting and they're inexpensive.
have used them for a couple leopard hunts where numerous other species were taken. for this they are ideal but would'nt purposely use them for anything bigger than elk, zebra, etc.
they expand very quickly and shed a bit of weight along the way.
don't even think of using them for cape buffalo, grizzly or anything else that requires a shoulder shot.