SUPER177 FOR DUMMIES

I would surely try them. There is certainly not cause that they'd not operate just fine within your Beeman. I have had very good luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin etcetera.). I'd personally check out a tin and find out how your Grizzly likes them as all guns appear to have their beloved pellets.The RWS Superdome