It may just be the cartridge since 7mm08 was created by Remington but it says Rem. 7mm08 on the barrel. It was re-built about 15 years ago by a local gunsmith who is well known in my area for his quality of work so I don't think he would have put a barrel off another gun in fact if my memory is correct I believe he ordered the barrel brand new. It wasn't cheap to get it rebuilt, about 6-700$ back then. I don't know if it was mil-surplus, it has a nazi swastika on the action under the scope mount so maybe it was surplus maybe used in action. My dad traded a guitar amp for it back in the 70s so there's no way of finding out. I can get pretty good accuracy with core lokts (.75-1"ish at 100) but I haven't been able to find any of those in 7mm08 since the shortage.