Originally Posted by Jcub
I don't know how much either case can hold of the top of my head, but I know they are pretty comparable. So that's why I said Win Mag.
It supposedly has 93 gr of usable case space. The 300 WM has 86.4 filled to the mouth and the 300 Dakota 94.8. Deduct about 2-3 gr for neck capacity and it is basically identical to the 300 Dakota which is about 10% more volume than the 300 WM. For comparison, the 300 RUM has about 107 gr capacity to the mouth.