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Posted: 5/12/2004 6:31:37 PM EST
I want to build a target gun with FF HG a JP trigger and quality Douglas 16 inch barrel.

Will the 16 inch be less accurate then a 20? I don't plan to shoot at a distance further then 100 meters so velocity is not a concern.

Also with the combo above and match ammo are sub 1" 10 shot groups likely or possible? I get 2" 10 shot groups with my box stock Bushmaster target (and Q3131a) which will be my basis for the new gun.


I am tired of the 20 inch HBAr and want something different. Cannot afford to own 2 AR's so i want the best of both worlds.
Link Posted: 5/12/2004 7:00:30 PM EST
Link Posted: 5/12/2004 9:50:20 PM EST
Link Posted: 5/12/2004 10:17:21 PM EST
I think free floating it plays a big part also.
Link Posted: 5/13/2004 12:30:52 PM EST
As the others have stated, a quality 16 will outshoot a marginal 20. Combined with a FF handgaurd, a good trigger and compatible ammo, sub MOA is realistic.
Link Posted: 5/13/2004 2:31:19 PM EST
[Last Edit: 5/13/2004 2:38:49 PM EST by dmk0210]

Will the 16 inch be less accurate then a 20? I don't plan to shoot at a distance further then 100 meters so velocity is not a concern.

Will you be using optics or open sights? If you are using iron sights, the 20" will have a longer sight radius so even though the 16" barrel has the capability to be just as accurate, it may be difficult for you to shoot accurately with it. The longer sight radius of a midlength helps alleviate that. The Dissapator with it's full length sight radius is even better.

Using optics and with barrel diameter being equal, the 16" being shorter is therefore stiffer and has the potential to be even be more accurate than a 20".

We're probably talking about minute differences either way though. A lot of other factors will make much bigger differences.

I have a box stock, off the shelf, non floating, non chrome-lined, 16" HBAR, RRA midlength upper from Adco. With a 9x scope on the flat top it will do .90" groups @100 yards all day long with surplus ammo.
Link Posted: 5/13/2004 3:20:13 PM EST
Thanks for the replies.

My plan is for a Douglas Air Gauged SS barrel 16 inches long. I want to find one in the HBar profile and not bull barrel.

To answer question I will be using optics (the best I can afford actually) FF HG and a 3.5# JP trigger.

Do you think my barrel choice is quality enough to get me where I want to go?
Link Posted: 5/13/2004 4:27:20 PM EST
I have an 18" Douglas from Compass Lake with a medium contour (0.85") that shoots around half MOA.
Link Posted: 5/14/2004 7:26:23 AM EST
I also have an 18" Douglas SS barrel from Compass Lake Engineering with the SPR profile and CLE chamber and it, too, shoots sub-1/2 MOA. Got it from Wes at MSTN.
Link Posted: 5/14/2004 7:32:18 AM EST
[Last Edit: 5/14/2004 7:34:02 AM EST by RAMBOSKY]
Forgetting about velocity for the moment and just talking about accuracy............with all things being equal, (free float, ammo, trigger pull, sight allignment, wind, weather cond. etc.....) a shorter, thicker barrel will have less vibration harmonics than a longer thinner one.
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