In preparation for a handicapped muzzle loader hunt, I had to make a .50 manageable for a smallish 13 year old. I filled the hollow synthetic butt with dry sand(graded sandblast media to be precise), tamped it in solidly, capped the hollow with epoxy, and added a soft recoil pad. Even with the 24-26" barrel, the rifle came out feeling muzzle light and manageable both physically and recoil wise. IIRC, it added approx 10-11 ounces to the total weight.
|