I wonder if any of you technical guys can explain to an old timer if there is any rule of thumb on accelerated barrel wear caused by some of the high velocity rounds. This was something that years ago we never even thought of. One of my rifles is a H-S Precision 243 WSSM. I know this is not the most popular calibre but it shoots amazingly well, I believe that the anticipated barrel life is about 1500 rounds. why is this when other rounds with equally high velocity potential dont seem to cause the same wear problems? Incidentally Old Keeper is exactly that, and as I have more rifles than any sane person should have, the chances are that Old Keeper will wear out long before his barrels! Cheers.