I might definitely attempt them. There's not cause that they would not function just fantastic inside your Beeman. I've had excellent luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so on.). I'd attempt a tin and find out how your Grizzly likes them as all https://super17733322.blog-eye.com/36158275/super177-can-be-fun-for-anyone