Dunno. But I am NOT a fan of the S&B buck. The 12-pellet load in the clear hull. In my 870, it patterns much wider than other loads, and leaves nasty leading streaks on my bore. And some of those streaks are almost a full pellet-width, which I interpret to mean those pellets are getting squished pretty badly in their trip down my barrel.
There is obviously no shot cup protecting your barrel or keeping the pellets together.
I like other S&B ammo (9mm, .380, .223) but NOT the 12ga buck. The Wolf has to be better than that.