Re barreling an AR-10 ??
- Thread starter Baddog 0302
- Start date
There are TONS of aftermarket barrels for the large-frame ARs out there, but what will/won't work depends on what specifically are you looking for...that info might get you pointed in the right direction?
For example...
a) Do you REALLY mean AR-10 (i.e. - Armalite) or do you mean something else like an LR-308, etc. (it makes a BIG difference with the large-frame ARs which, unlike AR-15s, aren't designed to a universal standard/spec.)?
b) What caliber?
c) What length barrel?
d) What twist?
e) Threaded/Plain muzzle?, etc., etc., etc.
Ok...that helps.
First off...the AR-10T contour isn't what you'd typically call a "heavy" barrel as they are ~1" under the handguards, 0.875" at the journal and ~0.750" to the muzzle. If you want a heavier profile than that, they are certainly available, but that's your call. You don't likely need a 24" barrel in a .308 gasser to get the most out of the rifle/cartridge within the practical limits of its usefulness.
Second, a slower, 1:12 twist will somewhat limit your options as most ready-made gas gun tubes for the Armalite AR-10 pattern are primarily a little faster (like 1:11.25 to 1:10). Frankly, I wouldn't sweat the twist too much unless you are just really planning on mostly running lighter weight bullets from the rifle that the faster twists may not play well with when all is said and done.
Now...with the above features/options that you want in mind, you are most likely looking at a custom barrel using any number of different mfg's blanks as the basis for your barrel whether it be a Krieger, Rock Creek, Bartlein, Shilen, LW, Douglas, etc. Check with Paul Craddock at Craddock Precision and see what he's got in Armalite AR-10 pattern that may meet/exceed your requirements. He's great to work with and generally is only 3-6wks out on complete barrels provided he's got the blank available you want to use.
If you decide you want to give/take a little on your requirements, there are a host of different options for an off-the-shelf, Armalite AR-10 pattern, 20"+ barrel, including various options from Rainier Arms (Select, Match, UltraMatch), Noveske (21" Pac-Nor blank to Noveske's specs), Armalite (SASS, 10T, etc. barrels), SAOD's DMR and Target barrels, etc.
ORD,
Thank you, I'll contact P. Craddock tomorrow, the reason for the 1-12 is , I'm limited to 300 yds and shooting 150's is a little more enjoyable and less wear & tear on the wallet that 175's
Jim K, the only twist they list is a 1-10
Thank you, I'll contact P. Craddock tomorrow, the reason for the 1-12 is , I'm limited to 300 yds and shooting 150's is a little more enjoyable and less wear & tear on the wallet that 175's
Jim K, the only twist they list is a 1-10
A 1:12 will shoot the berger 185 juggernauts. 175 smks and 178 amax also shoot well in a 1:12. Like you say the 150s are cheaper, but that twist isnt going to limit you to them...
If my information is correct the latest version (# 5) of the USMC's M-40 still has a 1-12 twist
