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AR-15 .223 barrel Length?

 
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  #1  
Old 03-06-2011, 09:32 AM
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AR-15 .223 barrel Length?

Guys I have a Stag Varminter with a heavy SS target barrel 24" with a 1 in 8 twist. She is a bit front heavy and I am thinking of maybe putting her on the chopping block. My concerns are I plan to load for it soon and want to take advantage of the larger bullets the 8 twist will shoot for long range shooting. I will be using it for gophers and prairie dogs in the summer and also coyotes year round. What do you think the perfect length barrel would be? I don't want to loose accuracy. Right now with the very inexpensive Wolf 55gr rounds its affective range is about 550 yards on a yote. I hope to take it farther with larger bullets and hand loads.

Thanks for any advice.

Jeff
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Old 03-06-2011, 10:56 AM
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Re: AR-15 .223 barrel Length?

Broz

18" is the ticket for me but 20" is very manageable as well. Have you considered just switching out the barrel? There is a little more involved in choping the barrel on a gas gun than a bolt gun.

If you chop your barrel for 24" to 18" your gas port could be an issue as well as your buffer and spring. Gas port may need to be enlarged so you get enough gas to achive the proper IPS speed on your bolt.

I would call ADCO machine services and ask about the associated cost. Re profiling could be another option keep the speeds but drop the weight. Their are alot of options out their.

Jon
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Old 03-06-2011, 01:11 PM
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Re: AR-15 .223 barrel Length?

20" is a great opinion to go with. It can be very accurate. My wife's ar-15 it capable of shoot clay birds out to 468yd so far shooting the 50gn vmax. The major thing you will see it the drop in velocity. Using the hornady 55gn vmax which are rated at 3240fps out of a 24" barrel on go 3000fps out of the 20" barrel. But they are still accurate just get there slower.
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Old 03-06-2011, 08:28 PM
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Re: AR-15 .223 barrel Length?

Thanks guys, 20" is what I was thinking but great point on the gas issue. I will look and see how much barrel I would have in front of the port.

Anyone shooting a 20" 8 twist with the heavier high BC bullets?

Thanks
Jeff
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Old 03-07-2011, 12:17 PM
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Re: AR-15 .223 barrel Length?

I know what you mean about the 24" bull barrel being muzzle heavy. I bought one and never shot it, decided to go 20". I checked into having the barrel cut down to 20" but nobody local wanted to do it for less than about $150! I ended up selling it and buying a 20" bull upper. I can't speak to the velocity difference but I can say that the 20" barrel balances much better. I don't think you would have any issues with the gas block going down to 20" as I think they are in the same spot as the 24" barrel. You could go down to 22" or 21" and improve your balance without losing as much velocity. Food for thought.
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Old 03-07-2011, 08:24 PM
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Re: AR-15 .223 barrel Length?

There should be no issue cutting off 4" in regard to having enough barrel in front of the FSB. There are only 3 standard gas system lengths carbine, midlength and rifle. You have a rifle length system.

Jon
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Old 03-07-2011, 11:42 PM
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Re: AR-15 .223 barrel Length?

Does anyone make a 20" 458SOCOM barrel. If there isn't, and I had one made what would be the gains losses of adding the 4"?
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