5.56 short barrels

[SheepDog223]

Does anyone here have an idea about the fps produced by a (7" 1in9 barrel) V.S. a (10.5" 1in7 barrel) V.S. a (16" 1in9 barrel)

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[aquariumjunky]

Next range trip I will run some through my 14.5 barrel and post back! And please post the ammunition shot also for good quality comparison.

Steven

 

[SheepDog223]

I mainly shoot .223 wolf 55 grain and 5.56 green tip 55 grain.

 

[aquariumjunky]

If you happen to be a member at ARPC they now have a crono out and set up I believe semi-permanet on the rifle range for member use.

Steven

 

[SheepDog223]

I would like to know before I buy one or the other. I'm trying to get the one that I'll be content with.

 

[Wallygator]

You can usually figure that for every inch you lose in length, you will lose about 50 ft/sec.

 

[SheepDog223]

So with a 7" barrel I'd be getting down into the 2500fps range. How effective is that round going to be?

 

[RallySoob]

Nothing in .223/5.56 will fragment with a 7.5" but they are probably fun to shoot. Pretty sure 7" puts you around 2100-2150fps though

11.75 can frag out to 100-120yds

10.5 frag 50-70yds