I'm thinking of linning the barrel of a 51 navy I converted to 38 long colt so I can do away with the use of hollow base ammo. I cast my own and use six cavity moulds for plain base, but have to use a single cavity for hollow base moulds. I can do the detailed welding to secure the barrel linner, and can get the barrel linner, but does anybody know where to get a piloted bit for drilling out the orginal rifleing?
thanks.