I love this thread. 100% stock!
Years ago when I ran a local shooting range we'd get men who would come to the range with a pistol-grip-only stock they wanted to test shoot. Inevitably they would say "I bought this for my wife for home defense" and equally inevitably they'd load it with magnum buckshot!
Well, we'd step over to an empty range, I'd set up three soda cans and we'd step back twenty feet or so, typical maximum room size distance, and let them have at it. The idea was to rapid fire until they hit all of the cans. Nearly all of them would hit the first one, most would at least knock over the second one (not necessarily having hit it), while few ever managed to disturb the third. I can only think of one man who didn't think the recoil was unmanageable and even he admitted "this is going to be too much for my wife..." Every one of them either traded them back for a stocked version or bought stocks to swap with.
It didn't take me long to learn not to accept offers to try it myself because magnum buckshot out of a synthetic PGO is hard on the wrists!
I've even gone so far as to put a pound of shot in my synthetic buttstocks until I can swap them over for laminates. I'm not going to be humping these things through the woods for miles so mass is my friend when it comes to heavy recoil loads.