What gun caliber has more penetration power from these two?!
What gun caliber has more penetration power from these two?
comparing a 9mm luger round and a .45 ACP round, I heard that a 9mm had more penetrating power, and that a .45 packed more of a punch had more of a stopping power like getting hit with a sledge hammer vs a 9mm which is like getting stabbed quickly with a knife
Answers:
9mm has more penetrating power.
the 9mm luger has more penetration power
Take the weight and multiply it by the velocity of the bullet in feet per second. ie for 9mm 147*1,050=154,350 , for .45 acp 230*900=207,000. Now to get these numbers down to a size that you can actually use most experts then divide the answer by 7000. That gives you 22.1 for the 9mm and gives you 29.6 for the .45 acp. You can use this same formula for any bullet. So the bottom line is this, the .45 acp hits about 1/3 harder than the 9 mm. With that said, 9mm ammo is considerably cheaper than .45acp and recoils much less. So if you practice more your accuracy will improve. Shot placement trumps stopping power every time.
Penetrating power would be the 9mm. Amount of damage caused would definately be the 45.
the penetration power of any projectile depends on the proportion between its momentum (mass X velocity), which is almost equal between the larger but slower .45 and the 9mm, and its diameter, or caliber. the momentum is the "force" of the projectile to begin with, and the diameter determines how much material it will have to push aside.
here, the question divides in two: penetration in elastic materials, like the human body, and non elastic materials, like a metal plate or a brick wall.
in elastic materials, the "hole" the projectile will punch in, consists of permanent cavity and temporary cavity, with the first being the place when the material was completely and permanently pushed out of the way of the projectile, and the second being the place where it was pushed away but "sprung" back after the projectile's passing. most of the damage is caused by the temporary cavity, which affects much larger area, and that's why the wider .45 has better stopping power.
in non elastic materials, the temporary cavity will be very little to none. because of that, solid materials will slow down wider projectiles much more than they would narrow ones. due to that, walls and plates will stop .45 rounds better than they would stop 9mm ones.
I hope it answers your question.