Whitetail: Sticking to the 8x57 is a great idea. Have you checked out all the cheap surplus 8mm miliarty ammo available for cheap shooting?
Also, there are some great 8x57 bullets out there for handloading. The Nosler manual shows the 200 grain Partition at 2700 fps. This is faster than factory loadted 30-06/180 grain ammo and it's heavier and makes a bigger hole. An optimally loaded 8x57 is way ahead of the .308.
Also the 180 grain Barnes X and Nosler 180 Grain Bal. Tip have achieved good reviews. Remington makes a 185 PSP. Never used them though. I don't much care for the short, stubby little 150 grainers that some like to use in this caliber. Too little S.D., although I have seen some good reviews of the 170 Grain Speer Semi-Spitzer and that bullet shoots well in my rifles. You can also get premium 8mm bullets from Swift, Hawk and Woodleigh. The 8mm bore has suffered until very recently from a lack of good bullets, but new introductions have cured that problem.
If you want to do something with the tons of 30-06 brass you have, you can get an 8mm trim die and make 8x57's cheaply and easily out of .270's, 30-06's etc. Works like a champ. Also, both Remington & Winchester make new 8x57 brass and there is no excuse for rejecting this caliber for reasons of brass availabilty.
I'm not a big fan of the 8mm-06. You can't use cheap surplus ammo for practice and the round is too long for intermediate length mausers. Also, most of the loading data does not show appreciable ballistic gains over the strandard 8x57. Some people love wildcats and can't sleep nights without one to play with. I sympathize. I have my own obsessions and if others are willing to accept mine, I will accept theirs.