It always seems a shame to throw away a bucket load of perfectly good once fired hulls JUST because the silly Europeans have their own silly ideas about primer pocket size. Ballistics Products has a new (new to me) product that resizes the pocket to a smaller diameter, making it so the Euro hull will accept and securely hold a US primer.
For about $20, you can rescue Euro hulls with just a couple taps of a hammer. I am ordering one today. If you do a lot of reloading, I think this would be a worthwhile investment.
More info here --> https://www.ballisticproducts.com/Universal-Primer-Pocket-Conditioner-10ga-410/productinfo/0740010/
Hmmm. Is it safe to assume that the adjustable stock prohibition doesn't apply to pump scatterguns? I've got a Maverick 88 12 ga for home defense that I equipped with a folding stock/pistol grip that is length-adjustable when unfolded. I haven't yet taken it to the range, but have been wanting to do that. If it's verboten, I'd better just keep it home. Thanks.