Something that really makes me scratch my head, especially in this day in age, is why do all the reloading manuals state that 7.62x54R should be loaded with .308 bullets? Out of the 1,000's of Mosins I have come across I have seen maybe 2 Finn made examples with a .308 grove diameter. The only ones I know for sure that were in the Finn 7.62x53R, .308 grove were the M27's, which are pretty hard to come by. Even all the M28's were converted to D ball. I think Hornady is the only one that lists any loads using a .311 or .312 bullet. I was shocked that even Lyman in their manual says to use .310 diameter with cast in a Mosin. What do you think about this, and do you think they will ever change? Then again this will be wishful thinking because they still warn people about 8mm Mauser and treating all of them that they have the Patrone 88 J bore!