Speaking of the AR15:
In my experience this is the number one most stupid thing I’ve come across in 30+ years of gun shop counter conversation. I related this tale on another board and thought I’d share it here. Newton had it all wrong. Stopped in a large gun store along I-75 about 2 ½ years ago and the cluck behind the counter was patiently explaining to a middle aged Fudd, “You see, the .223 Remington cartridge ain’t like your other regular raffle cartridges. It drops continuously after exiting the muzzle and if you’re zeroed at 25 meters, you should be on target at about 300 yards (so far so good, eh?), but here’s whar it’s different than say, your .308 which keeps a dropping to the earth. The .223 Remington bullet begins to rise after about 300 yards.” Now I’ve heard some ridiculous sh...stuff standing in ranges, gun shops and at shows, but this dang near takes the saltpeter spiced cupcake. Most of the ludicrous things I’ve heard in gunshops were related to the cluck attempting to mislead the Fudd into buying some geegaw that they clearly don’t understand how to use. But this cluck was like a black hole of IQ, sucking the other customer’s limited IQ points into his gravitational field. I myself barely managed to escape the store with enough IQ points to remember where I parked and how to start my vehicle. It was akin to being caught in a short bus tractor beam.
I have a graphic illustration but am so new I cannot post it. It's quite funny.