touching up the crown on an old revolver

[bigbossman]

I have an old S&W M&P that could use a touch up on the crown. The revolver is not a gem and not worth much - it's been around and looks it. It does lock up tight and times well, and is fully functional.

If I wanted to "shade-tree mechanic" the smoothing of the crown, is there a good way to do it?

[eaglemike]

I have a set of the Brownell's tools. If you were close it would take a few minutes.
I've heard of people carefully using a round head brass machine screw and some fine lapping compound in a drill.

[BOBGBA]

I've never thought about doing anything like that, but it seems interesting.

Maybe this will help.



Here's the link for it... https://www.youtube.com/watch?v=9MOlxPdnbww

[ar15barrels]

I do not like most handheld piloted tooling because they just don't cut that good without a rigid setup.

Where I have had good results recrowning revolver barrels while they are still on the frame was to use PTG piloted tooling made for use in a machine (not handheld like brownells) with the frame held in the milling machine.
I will center up the spindle with the bore and then run a piloted cutter down into the barrel to re-cut the crown.
This has given me the best results without actually pulling the barrel off the frame and doing it in the lathe with a single point cutter.

[btm]

I have a set of the Brownell's tools. If you were close it would take a few minutes.
I've heard of people carefully using a round head brass machine screw and some fine lapping compound in a drill.

Wow this is old school but the brass screw method has been around for a while.

What makes you question the crown? Is the gas/powder pattern off?