I've been following this discussion since it began and wanted to add some comments from a laymans perspective. I was introduced to the .30/06 by my Uncle, more than 50 years ago. He was a WW-2 Pacific Theater veteran. He had an 03A3 Springfield as well as his second love, (his Wife being first

) an M-1 Garand. I learned centerfire medium range shooting with a combination of those two rifles. The M-1 was not the "D" version but was setup in a similar manner. We killed many West Virginia Groundhogs, making ridge to ridge shots that were considered nonsense by anyone, outside the family that would listen to our tales

. My Uncle loved to hunt, shoot, was a prolific handloader and tough as a boot! He was crippled in his legs, using 2 canes to balance himself as he dragged his feet behind him as he moved. When hunting. My Uncle would, leave one cane and use the M-1 as a substitute. He would 4X4 into a remote point where he could gather himself and his rifle, with a thermos of coffee and some grub and wait for the critters to show themselves. He accounted for many whitetail deer in this manner. When the weather was bad, he would still go out to hunt along with his nephews and stay close to the Scout, while we would try to push the deer to him for a shot.
Through his instruction, I was able to avoid the "M-1 Thumb", during I.T.R., at Camp Lejune many moons ago. The .30/06 and the M-1 Garand have a soft spot in my heart (head

), based on those experiences.
Presently I have a .30'06 with a SAAMI spec chamber, built on a Pre-64 M-70 with an H-S Precision heavy fluted barrel, in a McMillan Marksman stock. It will out shoot me

. It is a heavy handfull that has taken Mule Deer and Antelope at extended distances. Mostly, however, it punches holes in paper. I've been playing around with different optics and havent setteled on the perfect combination for this "riflegun". If I were limited to only one rifle, the .30'06 would not be a hinderance in any form of sport in which I would desire to compete.
The new propellants that are coming available really open up the doors for enhanced performance in these older cartridges. .300 H&H magnum performance is reachable in the standard '06. That is a considerable jump, without going to the WSM and RSUM family of rounds, with a long barrel life to boot! Having a reamer made with closer than the MG tolerances standardized by SAAMI would do much to inhance any perceived accuracy issues, given a match grade barrel and proper setup. Remember, this round was a machinegun round as well as an infantry rifle round and was often used interchangably.
I have also used the civilian .308 and the 7.62 NATO, M-14. I like both rounds and given tight tolerances and quality components, both are capable of some amazing accuracy. I have been working on a .308 for a couple of years. Hopefully my amature gunsmithing abilities will be vindicated in this project

. Thanks for reading my meanderings. Greg