A few years ago I purchased some Colibre .22 rounds that were for indoor use. My neighbor and I set up a target in the garage and fired my Ruger Single-Six at it. It was not much fun for me but my neighbor enjoyed it. I had a lot more fun using the blowgun on a teddy bear target. I gave that to a kid after he promised not to hunt hummingbirds with it. Our best target was a depleted inhaler.