Very reassuring to see that no-one reinvented the wheel when it came to designating the most popular European calibres i.e. 6,5x55, 6,5x57 & 6,5x57R, 7x57 & 7x57R, 7x64 & 7x65R, .300H&H, 8x57JS & 8x57JRS, 8x68S, 9x3x62 & 9,3x74R, 9,3x64, and 10,75x68; the junior of which, the 8x68S, dates back to 1939 or 1940! Ballistics were good from start, end-of-line users did not succumb to marketing temptation for new products each year and as already reminded above by Joël Dorléac "it's not the arrow that kills, it's the archer".
Louis