Thanks, Devil Dog. I measured using a LC round, and it came out to a shade over 1/8". That would be marginal. I'm taking it to a local guy tomorrow, and he'll use the gauges on it to confirm.
Originally Posted by Devil Dog
"I suspect, wthout having it tested yet, that the muzzle may have some excess wear."
You can do a quick muzzle check with one of your L.C. rounds. Insert the bullet into the muzzle and observe how much bullet can be viewed. 1/4" is great, zero is bad. Anything under 1/8" will probally have accuracy problems.