barnfrog
Member
The groove diameter of my Ruger Blackhawk is 0.3585". Four of the cylinder throats will accept a .358+ pin gage and the other two will accept a .359- gage. I'd like to ream them all out .359 to make them all the same. 4D rentals says their .357 cylinder throater will ream the throat to .358, as does every other throat reamer I can find. 4D also says their .357 reamer comes with pilots from .354 to .359. Why would you need a .359 pilot if the reamer only reams to .358? I'm not a machinist, so there may be something I'm missing.
More importantly, short of trying the Bubba gunsmith method of chucking a dowel with emery cloth in a cordless drill (which I am loath to do), is there a proper way to open all my throats to a consistent .359 if the only reamers available will only open them to .358? Or is the existing inconsistency among my throats insignificant since it's somewhere in the neighborhood of +/- .0007"?
More importantly, short of trying the Bubba gunsmith method of chucking a dowel with emery cloth in a cordless drill (which I am loath to do), is there a proper way to open all my throats to a consistent .359 if the only reamers available will only open them to .358? Or is the existing inconsistency among my throats insignificant since it's somewhere in the neighborhood of +/- .0007"?