Heavy goose loads.
Makes a 12 into a 10.
Not for the recoil sensitive, or the delicate firearm.

Mossberg pioneered the concept with the model 835, 25 years+ ago.
Overbored barrel, recoil pad on stock, porting, etc.

Benelli followed suit with the SBE l.
And ouila' a star was born.


Never saw a 12 bore was PROOFED for that load.

There were some deeper chambered 12's early on when wads and wadding were being extended to cushion payloads.
But they weren't for those shells!

Out there doing it best I can.