I have been playing around with #12 snake loads and 000 buck in my .410 Hatfield. I shot 5 copperheads on my property after my dog was almost bitten by a 40+" copperhead. All at night. I also shoot armadillos regularly on my property using a 9mm AR15 with a silencer.
All of that happens after dark here so the shotgun was really hard to use on the copperheads. I found a cheap picatinny rail barrel mount on Amazon and bought it.
Mounted it last night and also a laser sight off one of my G19 clones. It's a trigger guard mount but mounts on the rail so I really don't care about aesthetics.
I had loaded some 000 buck in .444 Marlin cases Barry54 sent me(Thanks dude) over 6.5gr of MP254. 3 pellets in claybuster wads capped by folding the wad over and heating it followed by a melted wax cap. Velocity 900ish
I did a little armadillo cutout to pattern it and realized the factory groove and bead were not gonna get it at night thus the laser idea.
So I mounted the laser last night and patterned the buckshot tonight sighting in the laser. All I have to say is Wowza! the laser is incredible for a great sight picture. I only had 6 rounds of buck loaded so the pic below is the last 2 shots and I adjusted the laser a little to the left afterwards. All shot from the hip.
I had a few .444 cases loaded with #12 shot and patterned it after adjusting the laser the last time. It blew the target apart lol.
I will have a chance to try this on armadillos Thursday night and will report results. Kicking around doing some buck and shot loads with #4 as well.