Originally posted by Spectre
Yvsa,
The reason for at least some of the diameter decreases, is that firearms developments have moved us from very short-range, slow, smoothbore black powder arms to rifled, "smokeless" bullets.
My emphasis on "very short range."
Spec I have to disagree on the "very short range." The .50 Calibre Sharps was good out to 1,000 yards on Buffalo!!!!
And some of the "good old boys" were supposed to be able to do that with the open iron sights and just for fun.
I agree with the tactical philosophy and technological advancement as it seems most firefights in this day and age are at much closer ranges than in the past and, with the automatic fire or 3 round controlled bursts that Walosi mentions, accuracy doesn't count as much as it used to.
Sorta reminds me of the calculators that are alright to use in arithmetic nowadays.

And Walosi's comment, "The destructiveness of the higher velocity round was considered a good trade for the .30 cal rounds (.30-06 and 7.62 {.308}) of previous wars." confirms that accuracy doesn't count as much as it once did.
I had the privilige(?):barf: of seeing several pix brought back by a friend of mine in Nam that showed the destructiveness of the M-15 and M-16. A hit in the arm with the smaller .22 calibre, that would have at one time just went on through with a .30 calibre round unless it hit bone, took the arm almost completely off!!!!
There was also a pic of a head shot where the man was hit in the middle of the forehead and lost the entire back of his head.
I don't keep up with much that goes on in the world of guns, but I understand that the M-14 is still being used as a sniper rifle where accuracy over a long distance still counts?
And I have heard that the M-14 is still carried by the President's Guard?
I can see the SF's carrying smaller lighter weight calibres on most of their missions as they have a rep of getting in quite close but I wonder if perhaps there isn't at least one M-14 in a small squad for longer ranges where accuracy does count?
I do wonder though that with the different terrain and longer distances, without much cover or concealment, in Afghanistan if the M-14 wouldn't be a better weapon to equip our troops with if it comes to a ground war there?