NOT KNOWN DETAILS ABOUT SUPER177

I would undoubtedly try out them. There's not purpose that they would not perform just fantastic within your Beeman. I have had very good luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and many others.). I might consider a tin and see how your Grizzly likes them as all guns seem to have their preferred pellets.Top quality am