i looked it up wikapida
http://en.wikipedia.org/wiki/.22_Long_Rifle
http://en.wikipedia.org/wiki/.223_Remington
it says a 22long weight is 1.9 to 3.9 ga 40 grain solid weight is 2.6
a .223 is 2.6 to five grams the 40 grain weight is 2.6 and the 55 grain is 3.5
it is the same with shotgun shot shells if they go high enough they high enough to reach terminal velocity it is just as deadly as a 22 or 223 and in fact if a shot shell weight is higher then the 22 it is more deadly the only thing being is that it might not go as far but like what happen on myth busters they shot 9mm .22and i think 7.62 straight up in the air they did not come straight down the were moved by the wind so if you shoot straight up or at a slight angle the bullet will go just as far if it is a .223 22 or shot shell once it reaches the height for terminal velocity it does not matter how much higher it goes
really we should not shoot any gun up in the air at even a 500 pound squirrel i wuld also agree that a .223 would more then likely go through a squrril and keep going a 22 might not make it out but when we buy a rifle for deer we buya rifle that will go through a deer what if someone is in the bullet path behind a deer
ORIGINAL: Howler
since when does a .22 lr bullet weigh the same as a .223 bullet.
Fact of the matter, both present dangers if shot toward the sky. A major difference is that if they both hit the targetsquirrel, the .223 will keep going much further than the .22lr.
That's why so many of us are suggesting the use of a shotgun for shooting squirrels out of tree tops.