I used the 46-342W, since it is a copy of the original Winchester bullet. However, my Uberti rifle had a 28" barrel and I didn't get lube all the way to the end, so I had Tom make the same mold with deeper grease grooves for a little more capacity. I haven't had a chance to try it yet. It turned out that accuracy sucked on the POS Uberti '76 because the chamber was nothing more than a "wide spot in the pipe", and didn't properly support the cartridge. I'm waiting on it's return from Lee Shaver after having the barrel relined and properly chambered. I expect it to shoot quite well once I get a chance to work with it's new incarnation.