The only time I've ever employed this on a gun was to get a matte finish on a muzzleloader barrel that was intended for target work. The Laurel Mtn Brown really "bit" in that resulting finish. I'm sure it would be a time saver for you doing prep work, but I'm wondering how the guys you spoke with keep it from getting too aggressive, and having to do a lot of hand polishing afterwards. Maybe fine glass beads just don't do that.(?) I have heard of using baking soda, as the media, to limit the aggression on the metal.
