Bro. Raimey: Bofors was of course best know for their heavy ordnance, esp. the 40mm anti-aircraft and 37mm anti-tank guns. They did provide barrels for Sako rifles in the 60s into the 70s.

I have never read about a U.S. maker using Bofors 'rough forged tubes' but would be very interested to know more. It appears Bofors used the Siemen-Martin process and it is likely comparable Belgian tubes were cheaper.

https://sites.google.com/a/damascusknowledge.com/www/home