Ammo for Colt AR 6920


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joed
April 8, 2012, 06:45 PM
First off I want to say thanks for all the help I've gotten here. This is a great forum where you can ask questions and get answers. No one should ever take that for granted.

Anyway, what ammo would I want to use for a new Colt AR. I'm sure it will digest almost any .223 or 5.56mm but I'd like something that the military would use.

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gotigers
April 8, 2012, 07:05 PM
I believe it has a 5.56 NATO chamber and 1:7 twist. It will shoot any ammo from 55gr to 77gr. The XM193 (55gr FMG) and M855 (62gr penetrator) are both mil surplus that will shoot ok groups out of that set up. Federal is the biggest manufacturer of those, but there are others.

Each AR likes different ammo. So try a few different weights, bullet types and manufacturers to get the best results. The mil surplus will good enough for plinking, some 3 gun and SHTF.

Flash!
April 8, 2012, 07:12 PM
I have the 6721 which is the same gun with a heavier barrel... it eats up anything I use..... but keep in mind that these are not sniper rifles, so you will not get sub moa groups.... for that reason I tend to use my own reloads with the cheapest bullets I can find.... preferably in 62 gn.....

W.E.G.
April 8, 2012, 08:27 PM
This is good ammo at a good price:
http://www.wideners.com/itemdetail.cfm?item_id=10000017&dir=18|830|845

Currently in stock - but probably not for long.

Fresh wave of panic-buying seems to have hit.
5.56 ammo is flying off the shelves.

Dr.Rob
April 8, 2012, 11:25 PM
I've shot a LOT of 55 gr ball ammo out of mine. From Remington/UMC, PMC, Federal, Prvi and Winchester, I've had the best accuracy with Prvi M193 55gr FMJ.

Jeff F
April 8, 2012, 11:37 PM
+1 on the prvi M193. I have found prvi to be accurate in a number of calibers and their SP .303 British is first rate elk killing ammo. It is as or more accurate and hits harder then any of the domestic .303 hunting ammo I have shot

Sergeant Sabre
April 9, 2012, 03:38 AM
I'd like something that the military would use.

M855 is the standard US Department of Defense round for 5.56mm rifles, carbines, and machine guns. XM855 is nearly the nearly-identical round available on the civilian side.

Before you go buy ammo, read the ammo oracle: ammo.ar15.com

G.barnes
April 9, 2012, 06:12 AM
i shoot a lot of steel case. i have my gun sighted in with good ammo, but for the range i shoot whats cheap. at 10 cent a round it adds up quick if you shoot a lot.

Sergeant Sabre
April 9, 2012, 10:44 PM
Where are you getting .223 or 5.56mm at 10 cents per round? I'll buy all they have.

G.barnes
April 10, 2012, 05:45 AM
im sorry i meant 10 cent a round difference from steel to brass cased.

HOLY DIVER
April 10, 2012, 09:17 AM
my rifle is a BCM not a colt but give american eagle 55gr fmj a try they are pretty cheap and my BCM loves them shoots nice groups at 300yds

SpeedAKL
April 10, 2012, 09:54 AM
What are you planning to use the ammo for?

For general practice and blasting, I've had good luck with several brands:
-American Eagle Tactical XM153 (55gr FMJ)
-Lake City XM193 and XM855 surplus
-Winchester XM193 (comes in a white box)
-Prvi Partizan M193
-PMC Bronze 55grn and 62grn FMJ

For tightest groups, Federal or Black Hills match ammo using 77grn SMK bullets are tough to beat.

If you plan to use the rifle for defensive use then check out Hornady's TAP line, particularly with the heavier bullets.

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