NOT KNOWN FACTUAL STATEMENTS ABOUT SUPER177

I'd personally surely try them. There may be not rationale that they would not perform just high-quality with your Beeman. I've experienced fantastic 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 appear to have their favourite pellets.Get FR