NOT KNOWN FACTUAL STATEMENTS ABOUT SUPER177

I would certainly try out them. There is not explanation that they might not perform just wonderful within your Beeman. I've had fantastic luck with RWS pellets in all of my airguns (Hatsan, Crossman, Benjamin and so on.). I'd personally consider a tin and find out how your Grizzly likes them as all guns seem to have their favourite pellets.So look