Gas check cast .459

[Kissmybrass]

Question number 143:
Reloading data always has FMJ blah blah blah or plain old "cast" info.
I learned a lot so far but what would you consider gas check bullets?
I think you can go harder with these and break the sonic speed without trouble but would you match them to FMJ standards?
I can't find real data anywhere.

I'm shooting sub sonic cowboy-ish rounds and next step is to up the power a little to see if they become more accurate. I think these guys feel the need for speed like my Hornady loads.
I want to be around 1500-1600 fps or so. My Missouri cast coated are right where I want them to be - they are performing great at slower speeds.

[Headhog]

A gas check bullet is still lead bullet and should be treated as such. The purpose of the gas check is to provide a better seal to the bore. This prevents hot powder gases from cutting lead from the bullet and depositing it on the bore. In many cases you can push a gas checked bullet faster without leading the barrel, but you are still constrained by the powder and lead bullet pressure limitations.

Paul

[Kissmybrass]

A gas check bullet is still lead bullet and should be treated as such. The purpose of the gas check is to provide a better seal to the bore. This prevents hot powder gases from cutting lead from the bullet and depositing it on the bore. In many cases you can push a gas checked bullet faster without leading the barrel, but you are still constrained by the powder and lead bullet pressure limitations.

Paul

good to know! thanks for the info Headhog