I have a 7mag action to build a .300mag on,,, poke me iam done, I have three rifles that need to finished and one to be drilled/taped and a 3x9x40 Burris will fit just right.
You didn't have an option for what would your next 10 big game rifles be chambered in
Building a 7mm Rem Mag right now, next will probably be a 6.5 x .284.
I picked the 7mm Rem Mag in just in case I got stuck somewhere with no reloads available and had to pick up some factory loads near a hunting location. It would not be as nice as having my own hand loads and I might not be able to shoot as far, but at least I could still hunt. I wish more retailers stocked the 7WSM. If ammo for the 7WSM was widely available as in retail stores as a back-up, I would prefer the 7WSM to the 7mm Rem Mag.
If I had none, and had to start from scratch and get 4 right away, .308, 7WSM, 6.5X.284, .338 RUM or Edge.
Ive got a 338LM on its way. I have a 300RUM and 7mag set up for what I do now. I would like a 6.5 in a short action, a lightweight rig. I also have a win m70 action thats 1/2" shorter than a standard short action. Once I shoot it out (223WSSM) I might get a new 223 WSSM barrel for it or do something special with it, I don't know what yet.