Well, I've decided I want to scrap a Remington 700 ADL 7mm Mag, and use the action to build something big. Since the 470 Capstick is the biggest you can go while still using the .375HH casing, I decided to go with that, because I don't want to open my bolt face...Will I have to modify my magazine length for the Capstick? Any other important things I will have to consider?

Info is greatly appreciated,

I am building one now on a M70 Classic.

There are many reasons to not use a M700, both for the 470 and for a DGR. If you need more info, drop me an email. Don't want to start a flaming war here.

John, my brother Derrick is building his 470 Capstick on a SS M70 Classic also. Pacnor had the barrel to him in less than a month too. He is still waiting on the reamer to get here though. Pretty awesome cartridge. He plans on using the 475's in it and the FA 475 Linebaugh too.