LOL...Googled ".22 centerfire rifle cartridges"...... first link I opened listed 14 different .22 centerfire cartridges....."splain that to me"

All varmint rounds designed to take "small game.... at long range..... 200 yards."

The second article talks about the 5 most popular......22 hornet, .221 fireball, .223 .220 swift and .22-250.

.22-250 " ......40 gr bullets.....at 4000fps"

Sound like great cartridges for the western plains..... here in Pa.'s woods and smaller fields the .22mag is fine for varmints out to 100-120-150 yds........ 30-40 gr and 1800 to 2300fps. Bought a "stash" of CCI back when they were $13/50. As a field round that can last a summer.

That said I do own a couple of bolt action .223 and .243s.......but am not a handloader..................