If any of you were paying attention you heard that my M500 beat the snot out of me at Front Sight last week.
Pretty serious about correcting this problem, and so far tried various light loads and Recoil Pads.
Neither had any significant effect.
The Federal Low Recoil Slugs had slightly less recoil than regular Winchester #8 Birdshot, as did the Federal Low Recoil Buckshot. Obviously lighter loads are not the answer.
I ended the class with a Limbsaver Slip on Recoil Pad over the Magpul Pad on the stock. didn't make any noticeable difference.
I looked around and remembered Hans Vang who used to be closer to me in Santa Barbara until he moved to AZ a few years ago. His process includes reaming the forcing cone from 1/2" long at 3 degrees to nearly 3" long at a much lower angle, as well as numerous holes (31ea.) drilled on either side of the front sight, (62 total) for porting similar to Magnaporting. I can do the porting on the mill easily, but will probably just let them do it when they ream the forcing cone.
Apparently the vast majority of the Recoil Reduction is in the forcing cone which is pretty abrupt from the factory, and after having a look at my Browning Citori Trap gun which has the same type of Forcing cone and porting and is a joy to shoot, it became obvious that was what is needed to fix this gun.
Anyway more to come on this project.
Randy