Posted: 6/15/2025 1:08:02 PM EDT
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I have a 9mm stainless barrel that I would like to refine for 32acp The liner has a .500 diameter. What's the best way to remove the rifiling from the existing barrel? I'm concerned a out the interuppted cuts that would come from just running a drill bit down the 9mm bore. I plan to ream to final press fit dimensions for the barrel, I'll freeze the liner and heat the bore. |
Make your own Exploding Targets!
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http://www.ar15.com/forums/topic.html?b=1&f=75&t=472752
Make your own Tac-Sling!
http://www.ar15.com/forums/topic.html?b=3&f=4&t=233665
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Did my 22 WRF (24" bbl - 3/8" liner) on my 9" lathe. Didn't experience any issues with interrupted cut causing problems. Started with a stubby end mill after dialing the bore concentric with a 4 jaw, then a stubby bit, then a 12". Assuming we're talking a pistol barrel I'd think if you can get it lined up straight in a rigid setup actual drilling could probably be done in a (good) drill press to get it started, but I wouldn't want to have to face off the liner, crown or chamber it without a lathe. |
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Originally Posted By makintrax73: Did my 22 WRF (24" bbl - 3/8" liner) on my 9" lathe. Didn't experience any issues with interrupted cut causing problems. Started with a stubby end mill after dialing the bore concentric with a 4 jaw, then a stubby bit, then a 12". Assuming we're talking a pistol barrel I'd think if you can get it lined up straight in a rigid setup actual drilling could probably be done in a (good) drill press to get it started, but I wouldn't want to have to face off the liner, crown or chamber it without a lathe. Thanks for the advice. I wouldn't have thought of using an end mill. Turns out I don't need to do this anyway. There's a barrel available in 32 anyway, but I wondered how it was done anyway. |
Make your own Exploding Targets!
http://www.ar15.com/forums/topic.html?b=1&f=75&t=472752
Make your own Tac-Sling!
http://www.ar15.com/forums/topic.html?b=3&f=4&t=233665
http://www.ar15.com/forums/topic.html?b=1&f=75&t=472752
Make your own Tac-Sling!
http://www.ar15.com/forums/topic.html?b=3&f=4&t=233665
| The drills brownells sells just for this have a guide. I've turned my own guided drills on a lathe with a tool post grinder because I have a lathe so I don't have to spend $60 or $80 on a drill bit. I silver solder extensions on the as needed. |
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