SUPER177 CAN BE FUN FOR ANYONE

I'd absolutely test them. You can find not reason that they'd not operate just high-quality in the Beeman. I've experienced very good luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and many others.). I would attempt a tin and see how your Grizzly likes them as all guns appear to have their most loved pellets.Umarex 12 Gram C