I shot pumps for years, only reason I went to semi was recoil due to the high volume I shot in competition. I shot semi in 12 ga and Citori 3 bbl set for the little fellers.
HD or in my case add Office , I used pumps. I actually at one time could shuck as fast as most anything on the field, except a Rem 3200.
The model 12, 37, 1300, or 870 I used for defense of Home or Office, I didn't worry about gas systems, "O" rings, springs, anything.
Heck, there is an model 37 that is dunno how old. Kept in my dad's business and I don't think he ever fired it...I did. I patterened, I bought the loads, and I maintained it. Its been years since I've seen it, probably has the Winchester/Western 00 buck loads I stoked it with...I bought 5-6 25 rds bxs at the time.
Since that business is closed now, I guess its at his house, It will work, I'm sure. Even if its dry of lube, dusty, I still wouldn't hesitate to grab it and go.
I do know the 870 I bought for another business was also brought home when they retired. Stayed in a hall closet for about 8 years until one night the old boss used it to dispatch a critter( he lives out in the country)--dunno If I'd trust another platform to stay dormant and loaded, and work.
just me.