I just found this website and joined a few days ago. I just aquired a remington model 721 that has been rebarreled with a .270 newton barrel that has the initals j.k.r. stamped on the barrel. Research shows that there was a gun shop in Seward Alaska that may have done the work. I would like to know if it is still in business. I believe the work was done prior to 1953. I also have the rcbs dies for this caliber. Anyone have any more information? Thank you.