I use the bullseye #1 for my slow fire load over 4.2 grains of bullseye powder for 45ACP. It leads a little, but not too much. It's accurate, but my 1911 gets it hung up on the barrel ramp...it nose-dives into the edge and locks things up. This is not common...the bullseye #1 is likely the best for reliable feeding, but my match gun just doesn't like it enough.
The button bullet (185gr) feeds great, again which is odd, because it has a very short profile it should have some feeding issues. It doesn't cut holes as cleanly, but it is my timed/rapid fire bullet because of the flawless feeding in my gun. I use 3.6 grains of bullseye in 45 ACP. Very low recoil load, and it short strokes with a GI recoil spring.
My GI replica load is 4.6gr of bullseye with their 230 grain softball bullet. It leads like none other, but it's cheap, and I use it in my carry gun to replicate my carry load. It takes an extra few minutes to get all the lead out of the barrel with a chore boy on an old brush. I found this easier than trying to find a load that doesn't lead up as much. Some day I'll try harder.
-J.