NOT KNOWN FACTUAL STATEMENTS ABOUT SUPER177

I would absolutely test them. You can find not rationale that they would not work just high-quality as part of your Beeman. I have experienced very good luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so on.). I might try a tin and see how your Grizzly likes them as all guns appear to have their favored pellets.The RWS Su