THE FACT ABOUT SUPER177 THAT NO ONE IS SUGGESTING

I'd personally definitely attempt them. There exists not motive that they might not do the job just wonderful as part of your Beeman. I've had very good luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so forth.). I'd consider a tin and find out how your Grizzly likes them as all guns appear to have their beloved pellets.G