If recoil is not an issue, such as my 20ga's, I use a 0.6" Pachmayr Old English.



I wouldn't own a shotgun without a rubber pad, not even a .410. When I plant the butt in the shoulder pocket I require it to stay there. IMO, good practice for learning a proper gun mount is to make the pad as sticky as possible, put on a baggy shirt and mount the gun until the stickiness/clothing is no longer an issue.