I owned one when they first came out. Loaded some rounds of various weights.
Never got it to do what I wanted, didn't like the brass cost, and it tosses brass 30 feet away.
It sat in my safe for years, and I sold it for $200 with all my supplies.
Seems a few people like it, and it may have its place.
I ran it on a colt commander in 4.25"
I would say it would work for hunting if you are close and can pistol shoot decently.
I had it for a bear gun, but went with a 4" 44mag instead