I am working on a load for my factory repaired GP100 .44 Special 3". According Ruger, the cylinder throats now all measure .430.5. A cast bullet with a diameter of .430 diameter will not drop through completely and can be easily pulled out of the cylinder with two fingers. I tried pushing a cast bullet that measures at .431 diameter through each cylinder with a pencil, but it takes a hard tap with a mallet on a wooden dowel to push the .431 bullet out of each cylinder. Is this .431 diameter cast bullet ok to shoot out of my GP with .430.5 cylinder throats? The bullet in question is a 240 grn. truncated cone, bevel based Penn bullet that I double checked with calipers to measure .431 diameter. I am planning on using 6 grains of Unique for a light load.
Thank you,
Thank you,