what actions do you guys recommend?
I would highly recommend working with your gunsmith on your build too. IIWY, I'd acquire all parts required so all your gunsmith need to worry about is putting it together. You'll be able to pin point the delay in the building process; no excuses on awaiting parts.
There are excellent custom actions (and just as many on barrels) choices to choose from, here's a nice list >>>
Custom Actions
I'm currently building on Big Horn Arms SR2 LA. I originally had my heart set on
Deviant Hunter | Defiance Machine but I got an excellent price on the SR2 and couldn't resist. I'm really impressed with the SR2 though and can't wait when it is build.
As far as chambering goes, I was going to recommend the .300 Win Mag (1:10" twist barrel or 1:9" twist barrel if you're going to use a heavy bullet that requires it) for the magnum and .270 Win (1:8" twist barrel and you can shoot the heavies: 150 LRAB, Matrix 165/175, and Berger 170) for none magnum. You can also AI it you need the extra OOMP. You'll get roughly 5-6 grains but gain is further realized in brass life. I have Lilja 1:8" 3-groove in my .270 AI and I am very pleased with it.
There are excellent chamberings out there to choose from esp. if you go the wildcat route. It boils down to personal preference ... your personal choice.
Your 10 LBS rifle weight goal is fairly easy to achieve depending on the components you end up choosing, i.e., ...
- #5 Lilja 27" is 4 LB (Proof Research makes very rifle barrels
Carbon Fiber Barrels - Proof Research)
- McMillan makes a stock that can be made to ~2 LBS
- Jewell trigger is .2 LB
Check out some of the members previous builds here >>>
http://www.longrangehunting.com/forums/f53/
Good luck!
Ed