Re: rem 700 .270
Handloading the 30-06 is an excellent option, especially if this rifle will pull double duty as a hunting rifle.
The case has lots of capability to sling the heavy, high BC bullets (190-210gr class) very quickly and it's easy to find ammo for it.
One thing that I advocate for a hunting rifle, especially something that may end up in a hunting camp 20 miles from any kind of civilization is:
Chamber it in something adequate, but not a wildcat or uncommon caliber. 30-06 has the benefit that if you dropped your favorite hunting ammo in the lake or left it at home, you could walk into practically any hardware store, gunshop, or Walmart and find a box of hunting ammo (probably several options really) that will kill anything on this continent and shoot well enough in your rifle to get the job done.
If you wanted a good balance of knockdown power (good bullet weight) and high BC's then a better option is the 280 Rem, which is just a 7mm-06
Factory match ammo is next to impossible to find, but you can get factory hunting ammo for it. The high BC 7mm bullets out there are exceptional and the 06 case has the same useful capacity as the SAUM series, making it more than capable to sling them hard for LONG shots.