some things to think about:
if you’re going to use a gun for home protection:
do you live in an apartment or condo or a house? 357’s, 9mm’s, 40’s or similar guns have a high penetration factor due to high muzzle velocity.
if you miss an intruder the bullet WILL go through a wall into the next apartment. a 45 is not as cool but it has a lower muzzle velocity so it will not penetrate as far but it hits a lot harder. it’s like getting hit with a ballpeen hammer vs a sledge hammer. that’s why you’re taught to “double tap”(shoot twice) with a 9mm. or 40.
when you face an intruder in your home you will only be about 20’ away max. most times you’ll be within the 15’ mark. if you don’t believe me step out of your bedroom and run a tape measurer down the hall. practice at the range at these distances not just at 25yrds.
it looks cool to shoot at the target’s head but that’s at a stationary target. always go for the center of mass. if someone is gut shot they are pretty much out of action.
if you want something that will take them out quickly and is easy to learn to use look into a pistol grip double barrel 20 ga. shotgun with an open bore 18" barrel. you may only have 2 shots but at close range most times you only get 1. it has plenty of power but is easier to control because of less recoil.
just remember that the harder the recoil the longer it takes to get back on target. a 20ga. with 2.75" low brass shells won’t hit as hard as a 12ga. with 3.5" high brass but it kicks less and will stop someone just as quick. the open bore gives a faster pellet spread.
you won’t spray the room with shot but if you’re not dead on the target you will still hit them with a few pellets. the pistol makes a good backup. when faced with a shotgun the pistol will be used to shoot them in the back as they haul ass.
if you really want to see what various guns will do go buy a hog for a cookout but get a big one because you’re only going to cook half. get your friends with their guns and go to an outdoor range and hang the half a hog up at the height of a person. place some plywood of various thickness behind it.
get some different colors of tape also. fire 3 to five rounds at the hog and check the wounds. mark each wound with tape so you know what gun did what damage. the plywood will give you an idea of penetration if you miss or if the round penetrates through the hog.
check out the exit wounds. if it is a nice round hole it’s not good for protection. it should be a nasty hole much larger than the entrance wound.
if you only want 1 gun go with a shotgun with extra barrels. good for various types of hunting, skeet, or can be used for home protection. remember to go with 2.75" low brass for home protection.
for pistols I like a 45. and 22.mag. the 45. will stop anyone. you hit someone in the arm with a 9mm or 40. they keep coming. a 45. will just about take the arm off. the 22.mag is a nasty little gun that is fun, easy, and cheap to shoot with minimal recoil. you can go out plinking, hunting squirrel, rabbit, or varmints, and it will tear up a person in home defense.
you don’t have to have 15 rd clips in your home defense pistol. if you have to shoot someone it probably isn’t going to be a firefight where you need 100’s of rds. only put 5 to 7 rds in a clip and rotate clips.
most clips have great springs but you don’t want to have it fully compressed longer than necessary. a weak spring at the wrong time is bad news.
make sure you’re comfortable with the grips. if you don’t like hard plastic or wood or metal get some other ones that feel right. if they feel too big get a smaller pistol. you can probably find the caliber you want in a pistol that fits your hand.
I know that a lot of people like a shiny gun but for home defense I like a dull blue finish. it doesn’t reflect light so it’s harder for an intruder to see. if it’s dark it’s your advantage along with knowing the layout of your home.
remember that when there is an intruder that your heartrate will go up. you will be sweating, breathing harder, and twitchy. try to calm down. make sure of your target. you don’t want to shoot a family member or your buddy that has an extra key and let himself in because he’s too drunk to drive all the way home.
most military weapons have a selector switch. single shot, 3 round burst, or full auto. if you believe that someone can go full rock and roll and keep the barrel level and sweep side to side with full control I want some of what you’re smoking. that only happens in the movies.
full auto causes the gun to twist and climb. the bullets go everywhere but where you want them to go. 3 rd bursts cause the gun to move but you can bring it under control immediately. if you fire at a target you can see that the 3 rds track apart but still stay fairly close so that you have a better chance of serious damage to the person you’re shooting at.