Comments by "Anders Juel Jensen" (@andersjjensen) on "Forgotten Weapons"
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@soudadmaouas7058 Oh, I'm not saying that it isn't. I'm saying that human beings are so soft that at normal combat range (up to 200m) the 5.56 is plenty powerful enough to make them incapable of fighting after a torso shot. Despite being a smaller round it has a higher velocity (the bullet weight to gun powder amount is much better on the 5.56) so it reaches the target quicker on close range making it easier to hit moving targets. You need to shoot at targets 250-300 away before the 7.62 "catches up" because it doesn't lose velocity as fast as the 5.56
Obviously the 7.62 has a much better penetration on harder targets, but that's the thing: unless you're fighting idiots who think a small wooden shed is actual cover, then it doesn't matter. Brick, concrete and tamped dirt structures are enough to stop it. Armored vehicles stop it. Normal cars, however, are not enough to stop a 5.56 either, so there it doesn't matter.
As I've said, I've used both on multiple deployments, and having the LMG guy on 7.62 is obviously a nice backup, but I do prefer the lighter rifle with a 30 round magazine when trotting around at ground level in dense environments because the benefits of the 7.62 never really comes into play there. Now if I'm at an elevated position doing over watch with great visibility I'd obviously prefer the extended range... but at the end of the day, once you put a bullet in the target the caliber doesn't really matter. They either die or get pulled away screaming. Both of which means you don't have to worry about them any more. Sometimes the screaming can actually be of benefit: It occupies someone else for a while.
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I was issued the G3 first and the M16 6 years later, and I have shot several .308/7.62 hunting rifles. The G3 has a pleasant "distributed" recoil compared to a bolt action in the same caliber. If I had to go to war (again) and was given the choice between the Swedish AK4 update of the G3 and the latest iteration of the M16 I would chose the former without even blinking. Sacrificing 10 rds per mag and about a kg of extra weight in exchange for a rifle that hits a human sized target all the time, every time, in adverse weather conditions at 500-600 meters, and has the oomph to go through civilian cars, garden sheds, shallow ditches, etc, is an easy choice to me. Those of my buddies who were less good shots liked the M16, but it never won me over. The correct NATO cartridge change (as the US is figuring out now with the .277 Fury) would have been 6.5x55 Swedish Mauser. The 7.62 was too powerful and the 5.56 was too weak....
Oh, and that you put locking in quotes means you don't understand the mechanics. The bolt head stays in place until the bolt carrier has moved 7mm. The easiest way to think of it is to compare it to balls on a pool table. The "ping" from the cartridge sends energy through the bolt head to the wedge so it starts moving (like two touching pool balls being hit), which pushes the bolt carrier backwards until there is enough space that the rollers can retract, at which point the bolt head starts following the bolt carrier. It's as much a locking system as a rotating bolt head. It's just two different mechanisms that actuate the unlocking.
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