Dec 28, 2012 · #1
Do you realize that a single 00 pellet has less energy and momentum than a .380?
Because 00 buckshot is right at 9mm in diameter, actually 0.33\" vs 0.354\" (9 mm), we kinda think of 9 pellet 00 buckshot being equivalent to 9, 9 mm rounds. It isn\'t and it isn\'t even close, especially when the 9 pellet 00 is low recoil. Here\'s why:
The total energy delivered to a threat by a 12 ga load, say Federal LE13200 reduced recoil which consists of 9 00 pellets at 1145 fps, is an impressive 1413 ft-lbs. However the energy of each individual pellet is only 157 ft-lbs. A .380 Federal American Eagle, FMJ, has 203 ft-lbs of energy. How significant is all this?
Well, if a threat is shot a distance such that each pellet strikes a different place, i.e. no two pellets strike the same place, then the work done by each pellet, which reflects the ability of the pellet to penetrate, is all you get. A 00 pellet weighs 54 gn and is traveling at 1145 fps (actually that\'s muzzle velocity) and is very close in diameter to a 9mm. So in a sense it would be like loading your 9 mm handgun with a 54 gn bullet with a velocity of 1145 fps. Who would pick such a round for SD? Yet, that\'s what each pellet of 00 buckshot is.
Even the lightest 9mm loads, say a Federal American Eagle, has a bullet weight of 115 gns (well over twice the mass of the 00), a velocity of 1180 fps, and an energy of 358 ft-lbs. So 4 shots of such a 9mm load would deliver the same total energy, actually more 1421 vs 1413, than the shotgun. Then if you compare momentum of a single pellet vs a single 115 gn American Eagle 9mm, the 9mm has over twice the momentum. Momentum is the primary effect that knocks things around, i.e. recoil and bone breaking, not the energy. That\'s why a .223 with about the same energy as a 12 ga shotgun doesn\'t have nearly the recoil - the shotgun load has far more momentum.
Even a 90 gn FMJ .380 has more energy than a single 00 pellet and has 44% more momentum.
Hmmm, I wonder if I can get a .380 shotgun?
추천검색
요약 하자면 각각의 펠럿은 총구를 떠나는 시점에서 9mm 54그레린 권총보다 적은 에너지를 갖고 있음. 에너지는 질량과 속도에 좌우되며 발사속도를 고려할때 9mm권총 네발이 산탄 한발의 에너지와 비슷함
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난 100m 거리였다면 그걸 맞고 아플지언정 사람이 치명상을 입는건 불가능하다고 본다
컴팩트 9밀 권총으로 200야드 쏘는 놈도 있는데 뭘 - 야토가미 토카 다이스키!
글고 .22 맞고도 뒤지는게 사람인데 아프기만 하긴 - 야토가미 토카 다이스키!