Huey
25-20 Bullets - Bring on the O.C.D. jokes...
Wednesday, March 14, 2018, 17:51

I pushed cast bullets thru the chamber throats and compared them to bullets sized thru the Lee Sizer.

The die was sizing them .0006" smaller than the gun.

So I chucked a bore mop in a drill and broke out the Corbin Bore Lap Compound. It took a bit, but now bullets are sized .0002" under throat size.

It gets difficult to measure that close. Had to break out my best micrometer. A caliper just wasn't cutting it.

Bullets definitely come out sized with a smooth finish now. I may try it out and remove another .0001", but doubt that's needed.

This has been a fun and worthwhile project.