SUPER177 NO FURTHER A MYSTERY

I might absolutely test them. You can find not rationale that they might not do the job just fantastic with your Beeman. I have had excellent luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so on.). I'd attempt a tin and find out how your Grizzly likes them as all guns appear to have their favored pellets.Umarex 12 Gram C