Yes, I spoke to David at No Excuses bullets. I'll order a sizing pack. He says a solid base lead bullet will expand to fill the rifling even if the diamater of the bullet is .500, same as the land-to-land measure of the bore. He said a jacketed bullet will not, but lead will. So the Pedersoli recommendation for a .500 might make sense. He said the main goal is to have a bullet that won't move off the powder. So the smallest size lead bullet that won't do that is the one to go with. He said he would guess I would settle on a .501 or .502, but a .500 might work. Depends on my gun. I also want an accurate bullet so I may order several sizing packs. Ultimately I want one that's easier to load, doesn't move off the powder, and gives me good accuracy.

So that's how I'll go. I'll order sizing packs then decide.

Last edited by 10Glocks; 08/29/22.