I have a Green Mountain barrel mounted on my TC .58 Big Bore. I says .62 cal, but mikes out at .59 cal at the muzzle, making it about a 23 gauge. LOL. I casted up some .600 balls of weelweights and lead. Had to beat the balls down with a mallet on top of 65 grains of 3f. No 2 shots were anywhere close at 50 yds. Found some of the thin T-shirt patches and they were all blown through. I was not a happy shooter.
Today I loaded 65 gr. 3f and put a 3/4 in. newspaper wad down lubed on the sides with borebutter, thumb started the bare .600 RB and pushed it on down easy with the Ramrod. Topped it off with a small wad of newspaper, to hold the ball. This time all shots were on a 12" X 12" piece of cardboard at 55 yds. I did try 85 gr. of 3f but the group seemed to open up more. I also tried 3 shots with .570 RB in thick patch. They stayed on the cardboard as well. Never did hit the 2" bullseye but figured this would be minute of deer or hog and with the big .600 RB any hit ought to slow em down so's I could get to em. Anybody got other idea's or recommendations I could try. Thanks, Bobby
Today I loaded 65 gr. 3f and put a 3/4 in. newspaper wad down lubed on the sides with borebutter, thumb started the bare .600 RB and pushed it on down easy with the Ramrod. Topped it off with a small wad of newspaper, to hold the ball. This time all shots were on a 12" X 12" piece of cardboard at 55 yds. I did try 85 gr. of 3f but the group seemed to open up more. I also tried 3 shots with .570 RB in thick patch. They stayed on the cardboard as well. Never did hit the 2" bullseye but figured this would be minute of deer or hog and with the big .600 RB any hit ought to slow em down so's I could get to em. Anybody got other idea's or recommendations I could try. Thanks, Bobby