Quote:
Originally Posted by Jeff in Pa
It takes a high quality drill bit, slow speed and plenty of lubricant to drill them out. I'm a machinist and had one strip in the first 125 I purchased. Let just say there liberal use of the "universal adjective" 
I use KROIL to clean and as a penetrant. Compressed air ( wear safety glasses and ear plugs ) plus a pick works. Johncub's suggestion of a .22 caliber bore brush is a very good idea. |
I tried a new cobalt bit & got essentially nowhere, with plenty of oil. Right now, I'm thinking a .50 S&W right into the front of the SOB would be as effective as anything.