Question about "Cold Hammer Forged" barrels

[Horsemany]

Just pure skill and knowledge.

Yeah. Reminds me of a tv show I saw one time with a tour of Savage. They had one older gentlemen who's job was straightening the barrels. He had a jig that held the barrel pointing up around 45deg with a light up in the ceiling. He'd eye down it and bend it according to the shadows his trained eye could see in the bore. His bending tool looked like a giant modified pipe wrench. Not many complaints about the results of Savage barrels either.

 

[JohnBT]

There have been some interesting articles published on hammer forged barrels. This one was in Precision Shooting magazine and was written by a mechanical engineering professor at Purdue and Ruger's forging process engineer.

"Experiments with hammer forged barrels on AR-15s."

http://technology.calumet.purdue.edu/met/higley/ExperimentswithHammerForgedBarrelsonAR-15s.pdf