I ordered some .690 and .715 round balls to try out of my 12ga.The largest choke I have is IC.The .690 balls will fit fine with a patch thru the choke but .715 will fit by itself but not with a patch.I don't won't to waste the balls so I may try to use them bare ball with a couple of overshot cards.will it work without a patch and could it damage my gun in any way.The .690 will work fine with a patch.I'm not ready to fork out any more cash for more chokes if I don't have to.