SUPER177 FOR DUMMIES

I'd unquestionably test them. There's not motive that they'd not get the job done just fantastic inside your Beeman. I have experienced superior luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and many others.). I'd test a tin and see how your Grizzly likes them as all guns appear to have their most loved pellets.Good quality