If you go by internet scuttlebutt, they are made by Hornady.... but I doubt that claim. More realistically it would be Barnes as they are both owned by the Freedom Group. Barnes is more than capable of making them. But you can't rule out a union with Nosler either. Nosler and Winchester got together to make the fabulous Combined Technologies bullets so it would be a natural thing for Nosler to make Remington performance bullets as well. Unless you have an inside source at Remington, I doubt you ever know for sure. Heck, it could be ATK too.