I loaded up some full sized shells with trail boss and lead 32-20 rounds. I'll tell you how it shoots after the mud dries up at the range. I also have 5 rounds I made with a 32 cal ball I drilled out the pimer pocket enough to hold the primer and will test those out. I'm told by some old timers I trust that you get aboout 700 feet persecond out of those although after 15 yards they aren't accurate.