NOT KNOWN DETAILS ABOUT SUPER177

I'd personally definitely try them. There's not rationale that they might not do the job just great in 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 favorite pellets.So look out fo