12G shotshell enquiry

What made all these Western 12G Xpert shells pucker up? They are unfired. BB’s which fell out looked normal.

Hydroexpansivity.

My guess is that they got wet and the powder and wads swelled up.

They look like old reloads. Way back when I used to get similar poor crimps using the old “Lee Loaders”.

Hammer

I like that word! Hydroexpansivity. ;) ;)

Ray

I agree with Rimfire - there’s more going on with those shells than hydroexpansivity (it is indeed a great word, and far more efficient than saying they got wet and the powder and wads swelled up). I think the shot would have oxidized if moisture was the problem. They look like reloads, especially with the spot in the center of the crimp where I suspect the stickers showing the shot size were originally affixed.