Need to clean up muzzle on a smith .357 model 28

[RicinYakima]

I have had a Miller's Falls "breast drill for well over 65 years and still use it along with a brace and a whole bunch of bits.

That and my Yankee drill.

 

[bruce381]

The 38 Revolver brass pilot for my Brownells Facing and Chamfering tool measures .344 if that's what you're looking for. Mine is specifically marked for revolvers. My chamfering cutter is 45*, which is probably the most common.

Is this the information you're looking for?

yes that's what i needed tread drift is real here LOL