GunnyGene
Hawkeye
We all know about chokes and what they do, but what about going the other direction. Some interesting possibilities that change the pattern of the shot. I wouldn't do this to a favorite, but used shotguns can be had pretty cheap. And guess what - you don't need ATF permission.
5 minute video.
https://www.youtube.com/watch?time_continue=248&v=dhTrfe3P4v8
5 minute video.
https://www.youtube.com/watch?time_continue=248&v=dhTrfe3P4v8