super177 for Dummies
I'd personally surely test them. There exists not reason that they'd not work just fine within your Beeman. I've experienced fantastic luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so forth.). I'd try a tin and find out how your Grizzly likes them as all guns seem to have their beloved pellets.The RWS Superdome for air