Bought some Federeal truball slugs and they shot ok. They were the deep penetrator 1 oz but that's a little misleading. I weighed recovered slugs and they averaged around 457 grains so they obviously were not 437 grains to start with or am I out on my ounce calculation. They regulated level vertically and had a horizontal spread of 6" center to center at 55 yards. They advertise 1350 fps and I'll have to believe it as a rouge wad smashed the screen on the chrony.

I tried upping the speed on the .735 balls but all I got was flinchy and groups spread to 20+" so that game is over for now. I think I should find some .690 roundballs cast from wheel weights as they should weigh close to the truball slugs.

Oh and I tried taping weight to the barrel but took a pound and a half to do anything so that is out.

Going to look for some Federal barnes copper sabot slugs as the odd guy gets lucky and they shoot good in ok in a smooth.