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Posted: 1/30/2006 4:35:34 AM EDT
I'm new to the site and I had a quick question. I plan to buy a RRA varmint A4 when I return from Iraq. I am wondering which barrel length and twist rate to go with. I am thinking 18" with 1:8. This gun will be used primarily for coyote huntin in the east and plinkin. I would like to use 52-60gr factory ammo. Any help you can provide will be much appreciated. Great site by the way.

SSG Groves
2/506th INF, 101st ABN DIV
Operation Iraqi Freedom
Link Posted: 1/30/2006 5:38:14 AM EDT

Originally Posted By dhnut1973:
I'm new to the site and I had a quick question. I plan to buy a RRA varmint A4 when I return from Iraq. I am wondering which barrel length and twist rate to go with. I am thinking 18" with 1:8. This gun will be used primarily for coyote huntin in the east and plinkin. I would like to use 52-60gr factory ammo. Any help you can provide will be much appreciated. Great site by the way.

SSG Groves
2/506th INF, 101st ABN DIV
Operation Iraqi Freedom




Welcome!

18" with 1:8 would be just fine. WWB 45gr 3600fps varmint ammo should work well also in a 1:8. It shoots decent in my 20" 1:7 barrel.

Shok
Link Posted: 1/30/2006 6:09:51 AM EDT
Link Posted: 1/30/2006 6:15:03 AM EDT
Link Posted: 1/30/2006 11:21:30 AM EDT
The guys above are knowledgeable shooters and their suggestions reflect it

As a casual shooter, I go with 16" with 1/7 twist

this gives me the versatility to shoot up to 77gr or optimally the 62.

Plus I have an AR that doubles as home defense (short and nimble enough) and can hit my target to 300m+


from what I have seen, precision shooters go with the 1/8 and 18" bbls., and the masses a 16" in 1/9 or 1/7.

In short, there doesn't seem to be a bad choice, as long as its not longer than 20" and no slower than 1/9.

Welcome to the site, dhnut, and thanks for your service!
Link Posted: 1/30/2006 11:32:21 AM EDT

Originally Posted By bigbore:
16" 1:8



+1
Link Posted: 1/30/2006 12:05:52 PM EDT

Originally Posted By redfisher:
In short, there doesn't seem to be a bad choice, as long as its not longer than 20" ! hr



Is this just a weight concern or would it have a negative impact on accuracy?
Link Posted: 1/30/2006 11:17:36 PM EDT
Thanks for the quick responses guys you've been a big help. I think I'll go with the 18" 1:8. The 16" M-4's we use are pretty loud so the 18" would be a little better. I'm thinking ACE stock and the Hogue rubber tube with a bipod should make it look pretty cool. In the infantry today ya just gotta have the cool guy look. Thanks again for an awesome site.
Link Posted: 1/30/2006 11:51:01 PM EDT

Originally Posted By LOW2000:

Originally Posted By redfisher:
In short, there doesn't seem to be a bad choice, as long as its not longer than 20" !




Is this just a weight concern or would it have a negative impact on accuracy?



The impact on accuracy would be theoretical at most.
Link Posted: 1/31/2006 2:29:23 AM EDT

Originally Posted By LOW2000:

Originally Posted By redfisher:
In short, there doesn't seem to be a bad choice, as long as its not longer than 20" !




Is this just a weight concern or would it have a negative impact on accuracy?



combat-jack is saying what I meant to

I have read that the increase in accuracy (at least in an AR15) beyond 20"s is negligible.

I believe the ammo-oracle.com addresses this with some ballistic data. I suppose the theory is that the minor difference - if any - is offset by the challenge of carrying/wielding a 24 in the field.

For those who are pure bench-shooters, the extra 4" isn't a problem, and if they can squeeze .005% better performance.............they do.

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