Another 5 year old tread resurrected.

I have read that when Germany switched to a pointed 0.323" bullet in place of a round nose 0.318" bullet, the U.S.Army Ordinance Corps was prompted to redesigned the 30-03 and its 220 grain round nose bullet as the 30-06 with a 150 grain pointed bullet.

I have long thought that if the U.S. had adopted the 7.65x53, or a slightly modified 7.62x53, in 1903 we could have skipped both the 30-06 and 7.62x51.

I wonder why so many fewer countries adopted the 7.65x53 than the 8x57 and 7x57.