Beretta's description of the 1301 Comp as a "tactical" shotgun is likely meant to differentiate it from Beretta's other "competition" shotguns that are designed to win clays competitions. The stock on the 1301 Comp is perfectly suitable for shooting aerial targets. It might not be the ideal trap stock, or the best sporting clays stock, but it is hardly unusable.
I wouldn't let Beretta's use of the word "tactical" take the 1301 Comp out of consideration for a "simple, reliable semi-auto that isn't likely to have a lot of rounds put through it."
I just bought a 24" 1301 Comp to use as a general purpose/hunting gun. It's black but doesn't jump out as anything tactical to me other than maybe the oversized bolt handle.
My thought is it agrees with Dagga Boy's definition of an inconspicuous sporting shotgun. It's the one on the left next to a 1301T and an 870PM. It's not a $500 shotgun but thought I'd show you it isn't all tactical type gamer either (not that I really have a grasp on the definition of that).
I wouldn't hesitate on the stoeger. I spent a LOT of time deciding what to get when I made the leap to semi for my main field shotty. I ended up with the m3500(no reason to settle for 3" chamber) even after toting a buddy's Beretta A400 into the marsh a few times, for less than half the price the stoeger is hard to beat. I've only hunted one season with it but it took well over 100 quackers out of the sky in all kinds of conditions with out a burp! It also cycles target loads nicely. I've put everything from 2 3/4" 7 shot to 3 1/2" BB shot goose loads through it. love this gun.
Strong points:
For shooting clays or hunting without the plug it's 5+1.
If you get the cerakote version the finish is durable and I like the look of the bronze.
Pretty simple to field strip and clean.
Very light weight without the stupid "recoil reducer" installed, actually just a weight increaser.
Comes with four chokes.
Really can't think of anything I would change to be honest.
ETA: in full disclosure I did have to put 50 hunting loads through it before it would properly cycle with target loads, I tried light loads right out of the box and first time it short cycled and jammed.
Yeah, I've never been real good at the whole follow directions thing.