I think it was a Model 1377 but I'm not completely sure. It was one of those that you could pump up. I think it shot both BBs and .177 pellets but, I only used pellets for the grouse. Matter of fact I don't remember ever shooting a BB out of it. With 10 or 12 pumps it would take grouse easily. All I ever took were head shots so I can't answer to how a body shot would have been. But head shots were deadly.