As for bears, no I did not mean bird shot. I was thinking oo buck and then the slug. Just what is the caliber of a .410 slug. more then .300 I think.( I can't find it) thats a big piece of lead.
No, it's a small piece of lead without much powder behind it.
A .410 slug is about 110 grains and has about 760 ft-lbs of energy at the muzzle. In other words, the .410 slug is lighter in weight than the typical 9mm pistol bullet (which ranges from 115 gr to 147 gr). A .410 slug is NOT similar in ballistics to a .30 rifle bullet. A .308 rifle bullet is typically 168 grains and has 2500 ft-lbs of energy at the muzzle. Don't look at the diameter of the projectile and think that tells you all you need to know about the ballistics.
A 12 gauge slug is about 440 grains and has about 2500 ft-lbs of energy at the muzzle.
The typical rifle for hunting brown bears is a 375 H&H, shooting a 300 grain bullet, with 4200 ft-lbs of energy at the muzzle.
A .357 revolver shooting a 158 gr bullet has about 540 ft-lbs of energy at the muzzle.
In other words, a .410 shooting slugs is not much more powerful than a handgun. It would be completely inappropriate to use a .410 as a defense against bear.
I have taken defensive firearms training from nationally known instructors. Not a single one ever recommended a .410 shotgun for home defense. A .410 is certainly better than a pointed stick. But if you are going to use a shotgun, get a 12 or 20 ga.
This topic has been covered in many books, including "In the Gravest Extreme" by Massad Ayoob and "Effective Defense" by Gila May-Hayes. I have not seen a single book by a noted author that recommends .410 ga for defensive purposes.
Many training academies teach defensive shotgun classes, including:
- Sigarms Academy
- Lethal Force Institute's LFI-II class includes combat shotgun
- Gunsite Academy
- Blackwater
- Defense Training International (John Farnam)
Not one of these courses uses (or allows the use of) .410 gauge.
Furthermore, most .410 gauge shotguns are break-open guns, not pumps or semi-autos. In other words, if you want to go with .410 you will likely be limited to 2 shots.
Finally, if you really do envision being in a conflict within 6 feet, you'd better train at how to retain that shotgun. A person that close may well be able to grab and control the barrel before you can get a shot off.
but for the protection of you, yours, and your home in your home. leave the 12 ga for the ducks and teach THE WIFE how to handle a .410.
One of the instructors in a defensive shotgun course that I took was a 5' tall 110 lb woman. She worked a 12 ga Remington 870 far better than I. It's about technique, not brawn.
The courses that I have taken are not for military or police. They were not designed to teach SWAT or military tactics. The were designed to teach defensive techniques to armed civilians. Many of the academies that I have listed have two sets of courses -- one set for law enforcement and one set for civilians. I'm not law enforcement, so the courses that I have taken are for the armed civilian. I suggest that you take one.
There are far, far better choices for personal defense than .410 ga.