AR-308 - Barrel Length

[SHIVAN]

22" is going to be downright heavy for 3-gun COF's. I used a 22" 338 Federal AR-10 for hunting last year, and it was Ok, but not something I would want to run-&-gun.

For 400m the 22" would be great, but the trade-off too big for swing, lead and transitions. If 400m is your max, 16" would get it done without an issue.

[Shark]

The only downside is the weight; if you are going to have it threaded for a FH, then while I was at it I'd have the barrel turned down to .75" from the muzzle to under the gas block, and change the block to a low-profile block so you can get your longer rail over it. Should help the weight/balance considerably.

Sounds like a plan. I'll shoot it stock for a couple of months, then have it threaded to accommodate the FH, and longer rail. Who did you have do the work?

[BBB]

ADCO Firearms.

[JohnVassilakos]

Fulton Armory makes a chrome lined 18.5" barrel with a rifle length gas system. That's what I'm going with and I plan on hunting it and shooting rifle matches as well.

[Ilove2shoot]

I would go with a 16" since primarily it is a 3gun rifle. I have shot a 12.5" 308 upper at some long ranges at the McMillan sniper range....now I would not shoot game or a person at that range with this upper, but paper and steal gongs can be had at 7 to 800 yards.

[wild_wild_wes]

A couple months ago either here or on TOS there was a thread by a Ranger whare he gave a very detailed review of his issue SCARs (L and H). He mentioned guys were getting good hits at 900m with the H with one of the shorter barrels- 13" or 16", I can't remember which.

[wild_wild_wes]

Aha! Found it!



We were each given a MK16 (SCAR Light) and a MK17 (SCAR Heavy). We shared two MK13 EGLMs (grenade launcher) amongst 12 of us.

On day 1, we sat through several hours of power-point and learned about the weapon.
We then took them to the range, zeroed and familiarized ourselves with them.
We each put 250 rnds through each weapon.

On day 2, we fired the MK13 grenade launcher.

On day 3, we took the MK16 and MK17 back to the range for further evaluation.
We each fired an additional 750 rnds of 5.56 and approximately 400 additional rounds of 7.62

- Accuracy

We only used military issued, 62 grn for the MK16 and 147 grn for the MK17.

25 meters (prone, supported).

MK16, iron sights or eotech, groups were no larger than 1/4".

MK17, iron sights: 1/4", Elcan 4X: 1/8" (the rounds were usually through the same hole)

The scope of this initial test did not include shooting for groups on paper past 25M.

We did however engage pop-up targets out to 900M.

The accuracy of the rifle was very acceptable.

Some shooters routinely made hits @ 900M w/ the MK17 w/ 4X optic. I got lucky occasionally.



Looks like the 16"....