I personally saw the two my buddy ordered, back to back- paper thin on one side of muzzle.
Eh, the 2nd one had that Mossy Oak with green leaves camo..........ugly as sin.
Seen a dozen or more others at various shops back in the early 90's (proly checked out a couple hundred bbls on 1187/1100/870 myself).
Also viewed on some 870's (frequented some decent sized shops). Dunno what the bad % ended up being but I saw plenty enough to buy barrels I could check out before plunking down my $.
Kinda looks like they had a bad couple of yrs making them, after that they were OK.