NOT KNOWN DETAILS ABOUT SUPER177

I would surely check out them. You can find not reason that they would not work just fine inside your Beeman. I've had excellent luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so forth.). I'd try out a tin and see how your Grizzly likes them as all guns seem to have their favourite pellets.Get FREE shipping on qualifying