I can't seem to get this gunk out of my cylinder bores. And yes it's from firing cheap 38s in a 357. 357 rounds go in easily enough but cannot be extracted in the usual manner. I've cleaned with hoppes and brash brush, soaking with Bore Extractor following their instructions and it's improved but i can still see come crud.
The spent 357 casings that got stuck may be over expanded at .381 dia, my spent 38s are .376. But either way I'd like to get it spotless before trying other factory ammo or loading for it in 357. (learned my lesson will never put a 38 in a 357 SW again. I need to clean this and try other ammo before sending it back to SW for re-sizing/honing/polishing or whatever they do.
Would this technique using a brush in a drill be safe? Could it void my warranty? It is after all a standard cleaning brush. But maybe the factory will be able to tell I used a drill. Has anyone here done this? Or any other less severe suggestions?
Here's a link to the process video I found from Fortune Cookie on youtube.
https://www.youtube.com/watch?v=rSCc2M45KhI
And here's the gunk I can't get off.
The spent 357 casings that got stuck may be over expanded at .381 dia, my spent 38s are .376. But either way I'd like to get it spotless before trying other factory ammo or loading for it in 357. (learned my lesson will never put a 38 in a 357 SW again. I need to clean this and try other ammo before sending it back to SW for re-sizing/honing/polishing or whatever they do.
Would this technique using a brush in a drill be safe? Could it void my warranty? It is after all a standard cleaning brush. But maybe the factory will be able to tell I used a drill. Has anyone here done this? Or any other less severe suggestions?
Here's a link to the process video I found from Fortune Cookie on youtube.
https://www.youtube.com/watch?v=rSCc2M45KhI
And here's the gunk I can't get off.
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