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-   -   barrel length and velocity? (http://www.firearmstalk.com/forums/f14/barrel-length-velocity-25224/)

planenut 03-27-2010 12:35 AM

barrel length and velocity?
 
Most of the handgun ammo I look at shows velocity as tested from a 5" barrel.
My Kimber has a 3" barrel and I wonder how much velocity is lost from the shorter barrel. I am pretty sure it is significant. I use Federal Hydrashok and it shows 230gr @ 900 fps. I wonder what it does from my gun?

Is there a chart somewhere that gives 3" vs 4" vs 5" barrel length and velocity comparison?

Thanks

canebrake 03-27-2010 12:42 AM

Barrel Length / Muzzle Velocity


A little over 20 years ago the American Rifleman staff did a test using a 44 Magnum revolver equipped with a 18" barrel that was shortened in one inch increments. Five shots were fired at each barrel length, with each of the three brands of factory loads, Federal, Winchester and Remington, all using 240 gn bullets. The instrumental velocities shown are the averages obtained, after smoothing the data to remove the effects of random variations in velocity and thus to represent the incremental velocity changes more accurately.

1" 742 FPS
2" 935
3" 1067
4" 1165
5" 1239
6" 1298
7" 1345
8" 1384
9" 1417
10" 1445
11" 1469
12" 1490
13" 1508
14" 1525
15" 1539
16" 1552
17" 1564
18" 1575

Gojubrian 03-27-2010 01:38 AM

Who the heck would want to shoot a 1" 44magnum!! :eek:

planenut 03-27-2010 01:43 AM

Cool, that is what I was looking for and give me some idea of the loss.

Thanks Cane!

utf59 03-29-2010 03:22 AM

Check out this site: Ballistics by the inch.

For the bottom line, go to the RESULTS page and click on the caliber.


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