I might unquestionably check out them. There is certainly not motive that they might not perform just high-quality in your Beeman. I've had superior luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin etc.). I'd consider a tin and find out how your Grizzly likes them as https://ricardonzkvc.blogzag.com/79494525/5-tips-about-super177-you-can-use-today