I started out with a Ruger Redhawk .44 mag. Cylinder throats were all .432 dia. I have 4 throats that now measure .4325. This is after 168 lapping loads. LBT kit, Clover 320 grit, 2 grains bullseye. The muzzle measures .4295 the part of barrel that is threaded into frame is .430. I can push a slug with relative ease from muzzle to breech. I estimate that 90% of the constriction in the threaded barrel area is gone. My concern is the cylinder. Have I goofed my first barrel lapping attempt? Any and all help is appreciated. My thanks in advance.
Dean
Dean