NOT KNOWN FACTUAL STATEMENTS ABOUT SUPER177

I'd personally definitely attempt them. There's not purpose that they would not work just good inside your Beeman. I have had good luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and many others.). I'd personally test a tin and find out how your Grizzly likes them as all guns seem to have their favourite pellets.So look out f