Re: "Best" Bolt Action .308
If it helps any, in my first convo with Mike I explained what I wanted to do with the rifle and let him make the recommendation as to the stock, caliber etc. Mike is very easy to talk to (as long as you call after 5pm PST), if you're new he's patient and will steer you straight.
I wanted something I could enter competitions with - F/TR and practical, hunt with and just have fun with on the range when there was nothing else to do. He recommended the Tango-51. The only deviance on my rifle from the norm is that I've asked for a DBM to be placed on mine. When I get the DBM from Seekins I'll send it to Mike to get his opinion.
The Tango is probably the most versatile platform because the stock - McMillan Sako Varminter - is so ergonomic and lighter compared to the other 'paddle' stocks - I've fired both a Tango and an X-Ray to confirm this.
If you're a noob (like me), then the .308 is a great caliber to start with. It's more challenging to get out to 800+yds but that just means you learn more about wind, ballistics, dope and all round technique. Make it a challenge and it'll be more fun and satisfying as you progress - IMHO. If you do go with a custom then I highly recommend you get a good .22LR rifle and practice, practice practice while your rifle's being built - I went with a CZ452 Ultra Lux, very accurate rifle right out of the box.
Call him and see how it goes. If nothing else, you'll end that call with a lot more knowledge than before.
Best of luck and welcome to the most expensive but fun hobby in the world (besides, golf is for pussies).