[ARCHIVED THREAD] - Velocity Loss

Posted: 5/25/2013 2:13:25 PM EDT

What can someone expect for velocity from the common barrel lengths? This is in 7.62X39

8"
10.5"
12.5"
16"

How far can you realistically engage with each barrel length and what is the sweet spot for a gun that will most likely be used close in but may have to take a long shot (200 yards on occasion)?

Posted: 5/25/2013 2:29:23 PM EDT

[#1]

I'm not sure about a "sweet spot" as you call it, but with my Krinks (both calibers), I'm good out to 200m with iron sights on 18" steel targets, especially the 5.45

With regard to velocity, here are a couple of old threads on the subject.

http://www.akfiles.com/forums/showthread.php?t=86603

http://www.ar15.com/archive/topic.html?b=4&f=82&t=90315

Posted: 5/27/2013 6:34:17 PM EDT

[#2]

What does this translate into as far as drop goes?

Are the krink sites regulated to still work with the reduced velocities?

Posted: 5/27/2013 7:07:58 PM EDT

[#3]

how does it translate into terminal effects on tissue? That's something I wanna know

Posted: 9/24/2013 4:50:46 PM EDT

[#4]

Buddy of mine chronographed a 11 1/2 inch barrel with some of the common commercial ammo it averaged a little over 2000 fps. It seems to be the sweet spot.

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Posted: 9/24/2013 9:33:23 PM EDT

[#5]

I get about 2000-2100+ fps from the ~10" barrel from an M92

Posted: 10/23/2013 9:32:29 AM EDT

[#6]

http://www.youtube.com/watch?v=lbgAh9-sCDQ See MAC's Draco video on velocity. Chronoed at average 2075 FPS. The Draco has a 11.5" BBL. Your not going to see much change in drop out to 100 yards.

Quote History

Quoted:
What does this translate into as far as drop goes?

Are the krink sites regulated to still work with the reduced velocities?

View Quote

Posted: 10/25/2013 5:04:38 AM EDT

[#7]

the krink sites were made for the shorter barrels. So my assumption would be velocity loss would have been in the thought process. Of course I'm speaking for the 5.45 models. I don't think they changed the sites for the 223/556 or the 7.62x39 ones.

Posted: 10/29/2013 9:16:59 PM EDT

[#8]

There's this:
http://i810.photobucket.com/albums/zz28/pogi_pogi_pogi/762x39Velocities1.png

And MAC on youtube did a chronograph test of Wolf with the following:
16" AK: 2309fps
12" Draco: 2075fps
7.5" Mini Draco: 1940fps
(AK vs Draco vs Mini Draco)

You can probably fill in the gaps for any lengths inbetween well enough.

Posted: 11/13/2013 12:48:41 PM EDT

[#9]

glad i picked up a few crates of the old yugo m67 brass cased surplus when it was available. the velocity is good there and for being "corrosive" ammo, i'd say its not nearly as bad as the russian 7n6 5.45 ammo.

[ARCHIVED THREAD] - Velocity Loss

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[ARCHIVED THREAD] - Velocity Loss

[ARCHIVED THREAD] - Velocity Loss