Whenever I hear about sub-standard ballistics from anything other than the 30-06, I have to laugh.

Studies by the Americans, British, and everyone else showed that the vast majority if "hits" in WWII were less than 100 yards.

I can understand snipers wanting more. The majority of confirmed hits by Chris Kyle was with a 300 WinMag. He said if he had a 338 Lapua available earlier, he would have preferred that.

The average soldier has a hard time hitting stationary targets that are black and white at 400m

Just before WW-One, the Navy developed a 6mm cartridge for the Lee straight-pull rifle, but the first batch sank in Cuba. Roughly .24 caliber