Ted: Here's what the proof certificate for my Bernie says:
CERTIFICATO CUMULATIVO N. PRESSIONE DI COLLAUDO: Kg. cm3 1200. Camere 76
I think that's 1200 bars and 3" chambers - maybe you can do the math. Personally, I have no use for magnum loads, only shoot 2-3/4" shells and never push more than one ounce of shot at a time. But at 5lb. 14oz. this neat little 20ga. "production line" SxS, chambered and proofed for 3" magnum loads, could hardly be described as "meaty."

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