870
I have a brother in law that shoots trap w/ a custom 870. (special bbl/rib and butt stock). The receiver is stock 870 ( and I think trigger group too)
He is in- to- it.
He told me one time the # of estimated rounds he's put through the gun.
I don't recall the #, exactly, but it was in the tens of thousands, like 30-50 THOUSAND. Maybe it was more. There's been some minor repairs, a shell stop shot loose, a ring for one of the trigger group pins got broke (he thought he forced the pin in and pinched it) , but essentially it just chugged along. Neither of the above probs forced him out of a shoot.
I was stunned.
The 870 is a common LE gun. I would think there would be some interesting numbers out of the various academy's as well.