I would absolutely test them. You can find not rationale that they might not do the job just great in the Beeman. I have experienced superior luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin etcetera.). I'd personally test a tin and find out how your Grizzly https://super17712110.daneblogger.com/34966839/rumored-buzz-on-super177