I have never owned a gas checked mold before. But recently I had some questions and I'm having trouble finding the answer just by searching... so here are my two questions.The numbers are purely for the example. It could be any size bullet that is bigger than the gas checked base. Let's assume I have a rifle that needs a .460 bullet to fit the barrel. So I get a .45-70 mold that drops at .460. The gas checked base on the bullet is still going to cast for a .458 check, if I'm not mistaken.
#1. How do I seat a gas check on the base of a HP bullet that is sized to .460? Don't all .45-70 gas checked molds have a check groove that is designed for a .458 check? Obviously my .460 Lee sizer die wouldn't touch it, and my .458 die would muss up the bullet diameter. I had considered pressing it just barely into the .458 die, base first, and then tap it back out.... but I might muss up the HP nose. There's gotta be a better way.
And #2. If I did get it seated.... how would a .458 gc protect a bullet that is bigger than the check? Wouldn't the gasses just blow around the check?
I could easily see this scenario again when I'd need a .360 bullet (according to slugging the barrel) but I have to use the .358 checks on it. I actually have several molds that will cast .360, but they are all plain based, however if I had the GC version of those molds, they would still have a gas check groove that would only accommodate a .358 check.
I got a lot to learn about this new area of casting.
#1. How do I seat a gas check on the base of a HP bullet that is sized to .460? Don't all .45-70 gas checked molds have a check groove that is designed for a .458 check? Obviously my .460 Lee sizer die wouldn't touch it, and my .458 die would muss up the bullet diameter. I had considered pressing it just barely into the .458 die, base first, and then tap it back out.... but I might muss up the HP nose. There's gotta be a better way.
And #2. If I did get it seated.... how would a .458 gc protect a bullet that is bigger than the check? Wouldn't the gasses just blow around the check?
I could easily see this scenario again when I'd need a .360 bullet (according to slugging the barrel) but I have to use the .358 checks on it. I actually have several molds that will cast .360, but they are all plain based, however if I had the GC version of those molds, they would still have a gas check groove that would only accommodate a .358 check.
I got a lot to learn about this new area of casting.