NOT KNOWN DETAILS ABOUT SUPER177

I'd certainly try out them. You can find not reason that they might not operate just good inside your Beeman. I've experienced very good luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so on.). I would try a tin and find out how your Grizzly likes them as all guns seem to have their beloved pellets.So watch out for our se