I might unquestionably check out them. There may be not motive that they might not get the job done just great in your Beeman. I've experienced great luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so on.). I'd attempt a tin and see how your Grizzly likes them as all guns appear to have their most loved pellets.Umarex twe… Read More