For most shotguns you need an adapter to install to avoid feed problems. The adapter aren't expensive but necessary.
Less expensive, less recoil, fun to shoot
I've used them in an OU, recoil is super light, but they're dirty. Left a lot of residue in the barrels.
In side by side/over under work great no mods needed. For Mossberg 500 the mini adapter works great. Just don’t forget and leave in there- messes up feeding regular shells. Less expensive, less recoil, fun to shoot