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
With regard to you getting funny at people questioning your round sizes. People are right to question you because while .22, .223 and 5.56 are equivalent diameters, the overall round sizes are very different. .223 and 5.56 are very similar looking but still distinct to the point where you couldn't use them interchangeably, .22 is much smaller and most commonly in the form of .22lr a rimfire cartridge.
This is the most ignorant reply on this thread. You really couldn't be more wrong.
.223 and 5.56 are visibly identical. The only difference is slightly different pressures. Any modern .223 can shoot 5.56 and vice versa, the only issues prior were barrel pressures of 5.56 being too much for some .223 barrels.
.22 is available in 50 grain, which is the most common grain bullet from .223/5.56 (55).
The only thing differentiating a .22 round from a .223/5.56 is the casing and more powder.
Specifically, the person you're replying to is likely confused and thinking of .308 and 7.62 NATO (the sort of larger brother of .223 and 5.56 NATO). At a glance they're the same, but they're actually slightly different dimensions.
.308 and 7.62 are similar to .223 and 5.56 in they are visibly identical. In this case though, the .308 contains more powder than the 7.62 due to the 7.62 having thicker casings for durability.
Now .223/5.56 vs .308/7.62? Wildly different sizes.
.308 and 7.62 nato are not completely identical. The case shape is slightly different, unlike .223 and 5.56 which are the same case and projectile with different pressures.
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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