and names of parties qualified after technical evaluation: 1) Arm & Hammer Forging
On the downside, hammer forging
introduces considerable stress to the barrel, which can be difficult to relieve properly.
After hammer forging
, the bore is NiCorr treated (Ferritic Nitrocarburizing--an advanced form of case hardening) which, according to LWRCI, "is more lubricious, harder wearing and more heat and corrosion resistant than hard chrome.
Hammer-forged barrels are not well thought of by precision rifle shooters but a critical manufacturing process used by the hammer forging
guys is suddenly getting attention from custom barrel makers today.
Cold hammer forging
of barrels was pioneered after World War Il by Steyr Daimler-Puch and their equipment is now used throughout the world.
Barrels are produced using the cold hammer forging
process, using high quality steel.
30 caliber blank that was 17 1/2" long before hammer forging
will be about 24" long when rifled.
is an expensive process, but it's worthwhile because it provides the high level of accuracy found in all Glock pistols.
Precision Castparts will also acquire Arcturus Manufacturing Corporation, a hammer forging
operation, as a part of this transaction.
Most shotgun tubes today are formed by the hammer forging
Cryogenics avoids the stress put on the barrel and choke tubes by traditional hammer forging
The hammer forging
of rifle barrels is the state-of-the-art method for superior rifle barrels and this is a rifle that was expressly designed for the varmint shooter.