Johnson arms was sold in the late 1950s to Benko Alexander who built most if not all of johnsons custom rifles. the barrels in most cases where of Timkin steel. They also made barrels in a bantom weight and light weight.I have a 7x57 built on a 98 action.I also have the last serviceable 30 calib. bantom weight that was available and never fitted to an action.Johnson Arms became Gartman arms in the 1950s and was housed in Wrentham Ma. Eric Hertzog also done work for gartman arms.there is much more to this story. They built 2 custom rifles for the shar of iran and his wife one in 30-06 one in in 270 they where engraved by Alvin white.when the guns left the house they had several hundred of ammo with them.