A few years ago i had two brother in-laws telling me how fast their 270 weatherby and 300wsm were.They both had 150 grainers so i loaded some up in my 300 win. This was the max load in the sierra manual with imr4350 powder. We shot all 3 over the chronograph and i beat them by 200fps. Cannot remember the speed but it sure made believers out of them. ED K
