Remington and winchester dont use CHF barrels that I am aware of. Maybe on 22's which is how ruger got started using them. The 10-22T madel had Steyr bbl.
Ruger owns thier machine. bought it in '93 I think, used from CZ when they upgraded. It cost ruger something like 9 million.
Think about the difference between a Japanese tanto and a CSA calvary saber. The hammering. the folding. The temering.
You cant take a piece of tubed carbon steel and drag a button thru it and get the same exact dimensions each time like you can hammering steel over a carbide mandrel.
Remington uses hammer forged barrels. And you're way off base about button rifled barrels. For example, a Douglas premium air gauge barrel has .0001", one ten thousandth, or less variation in diameter throughout its length.
