Palegroe, I don't know a whole lot of history about the .30-06, but I do know that if you go to a store and look at the .30-06 offerings vs. the .308 offerings, you'll find there are a lot more choices in .30-06. For example, Federal offers 20 .30-06 cartridges and only 16 .308; Remington offers 9 different Core-lokt .30-06 cartridges but only 2 .308's. So, given that the .30-06 is so popular in the marketplace and is about 50 years older, I'd say the .30 caliber bullet choices is due more to the .30-06 than the.308. That's not saying the.308 is not a fine caliber, just that the .30-06 is more popular.