Close, i think its Bofors steel. My Mother in-laws sako has a bofors steel barrel, and i believe those were also used on some of the sporting mausers from the 60-70s (maybe 50s, honestly never really looked into it that hard besides, a random detour while trying to find her gun a stock) . ....I could also be wrong lol.Balfor to me means an old Sako barrel steel, or I could be remembering that wrong too