NOT KNOWN FACTUAL STATEMENTS ABOUT SUPER177

I would surely consider them. There is certainly not rationale that they'd not work just high-quality within your Beeman. I've had fantastic luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so on.). I would consider a tin and find out how your Grizzly likes them as all guns seem to have their preferred pellets.High quality