NOT KNOWN FACTUAL STATEMENTS ABOUT SUPER177

I'd personally undoubtedly attempt them. You can find not explanation that they might not do the job just fine within your Beeman. I have had excellent luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and many others.). I might test a tin and see how your Grizzly likes them as all guns seem to have their most loved pellets.Get