Sooo, I am finally into centerfire rifle cartridges in practice, no longer theory only and I discovered that 7.62x51 mm rounds are actually more like 7.8 mm in diameter. What nonsense is this and why is it called a 7.62 (accurate to the hundreth of a mm ) when it clearly is not?
For a minute there I actually though I had purchased the wrong rounds . Measured in inches and they are exactly .308 of an inch.
FWIW I suspect the answer lies in the land-groove disparity but I would like confirmation.
For a minute there I actually though I had purchased the wrong rounds . Measured in inches and they are exactly .308 of an inch.
FWIW I suspect the answer lies in the land-groove disparity but I would like confirmation.