Who makes AR's with hammer forged barrels

M

Magog

Moderator
For the cost of an AR you would think they would all be high quality hammer forged barrels, but I cant find one which is.
 
While it seems like a rather crude process to beat the barrel down on the mandrel, the process actually requires quite a bit of finesse. Subtleties provide exceptional control of the bore and groove dimensions. For instance, the mandrel is tapered and can be moved in along the length of the barrel during forging. This provides two advantages. First, by precisely locating the mandrel in the bore, a specific bore size within 0.0001” can be obtained. Second, by adjusting the mandrel’s position during forging, the operator can create a tapered bore. Most riflemen know that having the bore diameter at the muzzle slightly smaller than at the breech helps increase accuracy while having the bore diameter at the muzzle larger generally ruins accuracy. This is especially true when using lead bullets. We’ll find there are other methods of tapering a hammer forged barrel shortly.



Another advantage generally attributed to hammer forged barrels is a uniform, smooth bore. A section from the barrel shown in Photos 9 and 10 measured less than 20 micro-inches on a Mitutoyo Surftest, and that is for an unlapped, production barrel. See Figure 6 for output from the Surftest printer showing the nice smooth surface. Output from a typical factory barrel would look like jagged mountains on that printout. Hence, hammer forging provides nearly lapped-barrel smoothness without lapping. Bore size depends on the carbide mandrel to a large degree while uniformity depends mostly on consistent steel. Given a good mandrel and clean, uniform steel, the process carries the dimensions through the bore within 0.0002” on a production basis.



http://technology.calumet.purdue.ed...gazine - November- 2005 (Vol_ 53 - No_ 7).htm



For all the money you spend on an AR you think you should get quality huh?
 
properly done, Hammer forged barrels can be very accurate. That being said, the vast majority of competition rifle barrels ( F class, Benchrest ) are button rifled, or cut rifled...
 
I have looked at a few of your posts,OP,and there is just something about your anti-AR style that makes it seem like writing you a serious reply is a waste of time.

I recently built an AR upper with an 18 in DD tapered profile light bbl.It is hammer forged and chrome lined.Even the chamber is hammer forged.It gives me 1 MOA,which is pretty good for reasonably priced chrome lined barrel.

I am not going to go to the trouble of trying to re-post the pix,but if you search back through my posts you will find a couple of pix of targets with three holes in them .AR-10 and Kreiger barrel will be in the title.Kreiger barrels are cut rifled.As they are only 3 shots each,I will make no MOAclaims,but they speak for themselves.The 300 yd pic is into less than one inch.

I get the idea you are a mini-14 guy.Cool.I do not feel any need to put your rifle down.Enjoy it.

Search this post for the pic of the 600 yd target.:New Kreiger bbl in AR-10 shoots

No intent to put down hammer forged bbls,as I said,I am happy with my DD.Its not correct to suggest barrels made by other processes are inferior.
 
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FYI to the OP I think you are suppose to give the source info from where you copied and pasted your post not just provide the link for it....:)
 
Remington and Bushmaster[ bbls made by Rem] have hammer forged barrels. As to the crudeness theory, ponder the following. About a year ago there was a terrific article in Precision Shooting mag from the 2 guys that developed ans ran the hammer forging equipment @ Ruger. In that piece they described in detail how, when ideally set up, that process can yield barrels with interior bore dimensions held to .0001".
 
FYI; Magog is a Mini 14 fanboy. He made this same post on another shooting forum I subscribe to. He cannot stand the fact that there are people who prefer an AR over the Mini and he has made it a personal goal to try and convince every AR owner that they are wrong. Ignore him, he will eventually go away (or shut up for a while anyway).
 
I can't find one which [that] is
Click to expand...

HK MR556 and lots of others, why do you ask?


Pretty sure the Ruger AR is Hammer forged as well. Gotta just kill you Ruger now has an AR and not just the Mini-14.
 
Magog: Cost does NOT always equal quality. Also, as others have posted hammer forged AR barrels are quite common.
 
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Noveske
Ruger
BCM
DD
Remington
Bushmaster
CMMG
H&K
PSA

For starters.

What is harder to find is a Mini that can shoot accurate.. as in less than Minute of Barn.

My BCM 14.5'' barrel with cheap surplus ammo shoots sub MOA with an EOtech.

Hammer forged isn't really "better" anyways. As someone else pointed out.. a lot of bench rest guns do NOT use hammer forged barrels.
 
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hammer forged is usually the mark of a good AK variant but becomes too convoluted when attributed to other guns...this is like the cast versus forged argument with the 1911 guys and the billet versus milled argument with AR15s. at this point in history, the manufacturing method matters little, it's the attention to detail and materials used that makes the difference.

and for the money you spend on an ar? where is that coming from? I've spent more on bolt action hunting rifles than I did on my first AR. $600 for a semi automatic rifle is not a heavy price at all.
 
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