If you want to practice, around here and in most parts one of the better ways I think is grab a box of #7.5 target shells and head to your closest trap range and have at it. Teaches you to be fairly quick and reasonably accurate and lots of practice racking the slide. Also get a couple of snap caps so you can practice quickly racking the slide.
I'd use reduced recoil 00 or #4. Still has enough energy to penetrate in to the vitals, but might be lower enough that if it goes through a wall or two first it might not be as deadly to a person it hits. ANYTHING that is lethal on impact is going to still be lethal after going through one or two interior walls or an interior door (non-solid wood), but you can still reduce the lethality on obstruction penetration or give some indoor obstructions a realistic chance of stopping them.
I've got 3 kids and a wife who could all potentially be behind something. I actually prefer #2 bird shot. It isn't likely to be immediately lethal, but I can pretty much guarantee you are going to have a bad day and possibly a shortened one if you get hit with #2 steel shot from a 3" shell at 15ft. Especially if you take the entire shell.
Where as someone hit with it behind a wall really might only get superficial wounds. If I had almost no time I'd thumb 00 in the gun. If I thought I had an extra couple of seconds I'd stick a #2 birdshot shell in the chamber and 4 00 in the tube.
What I'd really like though is a .38sp revolver. I'd worry a lot less about over penetration if I also knew I was a lot more likely to only hit what I was shooting at and a .38sp is unlikely to over penetrate a person or if it did to have much energy after passing through (which isn't the case with a 9mm, .40, .45 etc)
I'd use reduced recoil 00 or #4. Still has enough energy to penetrate in to the vitals, but might be lower enough that if it goes through a wall or two first it might not be as deadly to a person it hits. ANYTHING that is lethal on impact is going to still be lethal after going through one or two interior walls or an interior door (non-solid wood), but you can still reduce the lethality on obstruction penetration or give some indoor obstructions a realistic chance of stopping them.
I've got 3 kids and a wife who could all potentially be behind something. I actually prefer #2 bird shot. It isn't likely to be immediately lethal, but I can pretty much guarantee you are going to have a bad day and possibly a shortened one if you get hit with #2 steel shot from a 3" shell at 15ft. Especially if you take the entire shell.
Where as someone hit with it behind a wall really might only get superficial wounds. If I had almost no time I'd thumb 00 in the gun. If I thought I had an extra couple of seconds I'd stick a #2 birdshot shell in the chamber and 4 00 in the tube.
What I'd really like though is a .38sp revolver. I'd worry a lot less about over penetration if I also knew I was a lot more likely to only hit what I was shooting at and a .38sp is unlikely to over penetrate a person or if it did to have much energy after passing through (which isn't the case with a 9mm, .40, .45 etc)