I might unquestionably check out them. You can find not reason that they might not work just fine with your Beeman. I have had good luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin etc.). I'd personally check out a tin and find out how your Grizzly https://super17788877.dgbloggers.com/36482048/the-5-second-trick-for-super177