I keep on hearing the old .308 Win is too slow, inadequate for long range hunting or target, a sawed off shorty not having the powder capacity like the .300 Win which is gradually being exceeded by bigger capacity rounds, and only a "nitch cartridge - specialized segment" or round for kids, women, & old folks.
Continually hearing this for over 50 years I have always had a 10 or 12 twist .308 and frequently shoot it to use up remnants of .20P, .204R & .223 powders. Works just fine using 125 Speer TNT to 178 Hornady ELDM bullets shooting up 3 inch steel @ 300 yards. Worked great @ 600 with 168's.