Re: Johnson bolt action 30-06 made in Belgium
After WWII, Melvin Johnson remained in the arms business, and one of the offerings advertised by Johnson Automatics was the "sporterizing" of military surplus weapons, including Mausers, M1903's and M1917's, including rebarrelling to any of four calibers (.30-'06, .270, .257 Roberts, and .220 Swift. Prices ranged from $26 to $170, depending on the amount of work involved.
Rebluing service was also offered, both separately and in conjunction with the other work, at $10 for a rifle or shotgun, $8.50 for a handgun.
I was unaware that the barrels were made in Belgium, but Johnson had connections there, so it is not too surprising. I don't find any reference to use of new actions, so I would assume the action is ex-military.