I looked at the forcing cone on my Ruger SSM and felt it was a little rough.
Being cheap I decided against buying the set up from Brownells to ream the forcing cone. A little polishing should help.
I used some 7/32" 416 SS steel rod, a bit of 1/2" brass rod, and a 8-32 tap.
A cone to center rod on crown, the drive rod, and the lap. The lap was cut at 6° to clean up a bit deeper than the standard 5° Ruger forcing cone.
Forcing cone before lapping.
After 10-15 seconds with the cordless drill and some 320 grit Clover silicon carbide in grease abrasive.
After another 10-15 seconds with the 310 grit, a clean up, and another 15 seconds with 400 grit silicon carbide.
I am quite pleased with the results. Will be interesting to get out and do some shooting and see if I notice any differences.
Being cheap I decided against buying the set up from Brownells to ream the forcing cone. A little polishing should help.
I used some 7/32" 416 SS steel rod, a bit of 1/2" brass rod, and a 8-32 tap.
A cone to center rod on crown, the drive rod, and the lap. The lap was cut at 6° to clean up a bit deeper than the standard 5° Ruger forcing cone.
Forcing cone before lapping.
After 10-15 seconds with the cordless drill and some 320 grit Clover silicon carbide in grease abrasive.
After another 10-15 seconds with the 310 grit, a clean up, and another 15 seconds with 400 grit silicon carbide.
I am quite pleased with the results. Will be interesting to get out and do some shooting and see if I notice any differences.