Why yes, I blew one up myself. A Mod 10 PPC custom hvy BBl. I loaded a round with a compressed load of WW 452 followed by 3.2 of Bullseye. I know how I did it but its long long and complicated to describe here. Took the top 3 chambers off and bent the top strap so bad that it wrecked the Aimpoint I had on top. I was shooting falling plates at the time and did hit the plate ( but not the rest. Did not get hurt but my hands stung. It was loud too.

BR