They would be very old pellets and might not give you too good of results on the range but you never know until you try. I would not depend on them for hunting. They should be about equal to Pyrodex but again, with their age (since these have not been made to my knowledge for many years) they might be a real disappointment.

I'd take them out for a fun day on the range. You will find little to no fowling when you shoot them with little need for swabbing actually...

Good luck, and let us know how they shoot...