7mm-300 Winchester? What is the difference between it and a 7mm Rem Mag? That new rifle shoot's pretty nice. Sure is an ugly stock though.
The 7mm-.300 Winchester Magnum produces 7mm STW & Ultra velocities with the heavy 180's and such with roughly 20 or so grains less powder. Give or take some depending on the barrel make, twist and length.
7mm Magnum on the left. Standard 7mm-.300 Winchester on the right. Mel Doyle out of Plummer Idaho will rechamber your standard 7mm Magnum barrel for 100.00 bucks, 60.00 if you supply the reamer. There are several variants of this chambering. The one pictured bellow is just the .300 case necked down. Other variants change the shoulder angle , case taper, neck length etc.
