"I don't see what you find strange about that quote you dug up."

Here it is.

"Most of the firearms manufacturers used hammer-forged barrels. A metal tube is slid over a mandrel, with the rifling formed on it. The metal tube is hydraulically squeezed down onto the mandrel, leaving the rifling embedded. This type of barrel is what you would find on a Remington or Winchester, as well as many others. This process is cost-effective where very high volumes of the same barrel contour is needed"

Show us any proof from anybody that makes barrels using the hammer forged method you have described.

You said Oly barrels being better than others. Then I find you dont know how hammer forged barrels are made.