Savage 5R

Re: Savage 5R

Correct me if I'm wrong...but there is cut rifling and button rifling when it comes to the production of barrel bores. 5R is a "type" of rifling that incorporates 5 lands, deeper groves, with the lands at an angular position to produce, reportedly, better performance in jacketed bullets and gather fouling in a way that reduces its impact on following rounds.

I picked up a Savage FP10 with a 5R barrel but have yet to shoot it. Some have commented that they have had better results in the cleaning process of their 5R barrels in comparison to 4 land rifled barrels.

Obermyer Barrels FAQ (spelling)
 
Re: Savage 5R

Hammer forging is used by many large firearms companies. The bored barrel steel is hammered around a steel rod that has a reverse image of the rifling. Machinery for hammer forging is very expensive. "About the only advantage of hammer forging is the high rate of production," Lilja said. "Because of all the pounding, though, a hammer forged barrel has lots of stress in the metal."