Lets take a shot at some elm rounds! Be interesting to see what would happen there. Sorry for the bad pun but would you expect anything less from me?
Although black gum is worse as i recently discovered at my Disney cut. The wood processor wouldn't split it and neither would his dual splitter. Sunk in a tiny bit and bogged down. I had to chunk it off the edge and even then it really grunted. So being a metal fabricator are you going to build a bullet maul?
I wanna try it. It would slow you down reloading all the time. Need a belt feed for the shells.. I know its fake but looks cool