where do you pick one of these up, brand new?
Site sponsor Interammo (banner up top) imports Izhmash arms. The shotgun section of their site isn't up-dated, but I've seen them flogging Baikals in the EE. Though they've sold out most of the latest batch they brought, you could try asking them to get you one for the next time.
So the more expensive O/Us perform better under stress, I'm assuming? Like the baikal, will it need to cool down between sessions, else the action will just lock down? ...What do you mean by volume?
It's not about the stress of a single firing (or a small batch), which any modern manufactured fire-arm is more than capable of handling by design. What is usually meant by proponents of the
$2.000+ or GTFO school is that a cheaper gun will only last for 10.000 shots before it needs significant service (or breaks beyond repair). Whereas fancy wonderguns have a life-span of hundreds of thousands of rounds and will always be as slick as when they left the factory. Removing exaggeration, it's not a wrong assessment on the average, and ‘you get what you pay for’ stands as good advice in many situations.
The MP-27EM-1C Sporting is one gun I use for clay sports (including more expensive ones), and it works very well for me. I'm not at super high volume, but am over 3.000 through this one with zero problems, and no change except for the pleasant loosening of the very stiff action from new. If the gun doesn't fit you as it does me, your experience will be different. All guns heat up quite a bit through rapid firing, and this one doesn't suffer more than usual; I've shot rounds of targets with the gun quickly enough that the barrels would give light blisters on touch, and no lock-up or malfunction.
Also.. what is the difference between the
"field" and the "sporting" models?
Barrel length, ported muzzles, weight, rib width, sights, stock shape. These differences are noted at the Baikal Canada site that you linked to. It also has an engraved UFO on each side of the receiver, to denote its use for clay targets rather than game.