Snicker; I have a T/C Penn. Hunter Carbine, 1 in 66" twist. It is not a great round ball shooter. I have tried different patch, ball, powder combinations, .490", and .495". Still can't get a consistant accurate load. I would not reccomend this barrel. I have two .54 caliber White Mountain Carbines, both with 1 in 48" twist. They both shoot patched roundballs accurately. As for the QLA, I know what you mean, you have to take extra care loading a PRB with QLA. I solved the problem by cutting my own patches from pillow ticking material from Wal-Mart. I cut square patches, that are slightly larger than T/C pre-cut round patches. I think that being square, and slightly larger prevents the ball from sliding into the bore, off the patch. Can't wait for my FRO Carbine barrel to arrive, and see how it shoots. As for your New Englander with its 24" barrel, (Rynite Stock?) I have a T/C High Plains Sporter, .50 caliber, 24" barrel, 1 in 48" twist. This barrel is almost identical to the 24" new Englander barrel. Mine is a tack driver with 90 grains Goex FFG, .018" pillow ticking patch, & .490" round ball. Make sure your barrel is clean down to raw steel. Use a comercial solvent like Shooters Choice Black Powder Cleaning Gel And Bore Cleaner. Then try working up a load. You may have leading from shooting lead conicals. Even though the bore may look clean, you will be surprised what will come out.