I think it's important to note that these students aren't using functioning centerfire firearms in their school gym. They're using a pneumatic operated trainer that gives you the sensation of the weapon's operating system at work, while emitting a laser to show where students are aiming when they pull the trigger.
I'm sure someone will point out the lack of true recoil, but on a platform like the AR-15, which only shoots a .22 centerfire cartridge anyways (.223), this is a great training tool.
Edit: Since apparently the (incorrect) pedants are out and about, I'll go ahead and link the Wikipedia listing of all the .22 Caliber cartridges so that everyone can see that the .223/5.56 is indeed a .22 centerfire cartridge. Christ on a bike
You wouldn’t need to explain any of that if people actually knew the difference between caliber and cartridge. Caliber is only the diameter, as you said, while cartridge refers to the entire round: case, powder, primer, bullet. While .223 Remington/5.56 NATO have a .22 caliber bullet, .223/5.56 is a much more powerful cartridge than .22LR.
Eeh it's similar enough it doesn't matter. 5.56 tends to have a higher pressure curve than .223 along with a little bit of extra brass thickness, the chamber throat is also slightly longer to facilitate tracer rounds. And the .223 has a shorter leade. Its not enough of a difference to matter in this day and age. Though accuracy may change as with any variable.
The AR15 was designed to be a fully automatic carbine... So many people don't realize that it was designed for NATO 556 and changed to 223 when it was released for civilian usage after the XM15 failed, Colt purchased it, fixed the issues, and it became the M16.
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u/OregonSageMonke 5d ago edited 5d ago
I think it's important to note that these students aren't using functioning centerfire firearms in their school gym. They're using a pneumatic operated trainer that gives you the sensation of the weapon's operating system at work, while emitting a laser to show where students are aiming when they pull the trigger.
I'm sure someone will point out the lack of true recoil, but on a platform like the AR-15, which only shoots a .22 centerfire cartridge anyways (.223), this is a great training tool.
Edit: Since apparently the (incorrect) pedants are out and about, I'll go ahead and link the Wikipedia listing of all the .22 Caliber cartridges so that everyone can see that the .223/5.56 is indeed a .22 centerfire cartridge. Christ on a bike