Ballistics by the inch

That’s … unexpected.

Checking this morning’s stats (which I do pretty much every morning, over my first cup of coffee, just out of idle curiosity), I saw that there was an incoming link … from the Washington Post.

???

So I followed the link back, read the article, and didn’t see anything in it about BBTI. However, given the topic of the article (actually, it’s an editorial), I figured that I’d find the incoming link in the comments. And here it is:

enzo11

3/13/2015 3:58 PM CST [Edited]

There are actually many very short barreled pistols ( 7 inch, on down to Derringer-sized under-3 inch) available chambered for the .223 round.

But what this idiot of an author forgets is basic physics : the shorter the barrel, the lower the muzzle velocity. The lower the muzzle velocity, the less penetrating power the bullet has – by a large factor ( the energy is partially determined by the square of the velocity).

For a chart on muzzle velocity for different barrel lengths:

http://www.ballisticsbytheinch.com/223rifle.html

For what that does to the available energy:

http://www.ballisticsbytheinch.com/2011graphs+/223…

 

OK, BBTI wasn’t actually cited by the Washington Post. But it’s still amusing.

 

Jim Downey

March 15, 2015 Posted by | .223, Data, Discussion., Links | , , , , , , , , , | 1 Comment