RUMORED BUZZ ON SUPER177

I'd surely attempt them. There exists not rationale that they would not get the job done just good with your Beeman. I've had great luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and many others.). I'd personally try out a tin and find out how your Grizzly likes them as all guns appear to have their favorite pellets.The RWS