Mike, almost 40 yrs. ago another Warden and I tried this with about 4 old H&R single barrels. We wanted to have some for demonstrating what would happen for our Hunter Safety Students. Wound up just explaing to them what would happen, cause the old H&Rs withstood the experiments, some several tries. The experiments were carried out by securing the shotguns in an old tire, cord to pull the trigger while we stood behind the target house.