Originally Posted by Game Stalker

If I were in the market,it would come down to the 300 WM or the 7mm RM.

Quick trip over to midway shows 71 available loads for the 300 WM vs. 37 for the 300 WSM. Of those, the 300 WM offers more non premium but effective loads that are less expensive. The 300WM also provides heavier grained bullet options.

The 7mm RM offers 61 bullet choices, many of which are premium or heavy for caliber loads. They are also less expensive than the 300 WM offerings.

Either the 300 WM or the 7mm RM can easily handle the game and range the OP originally mentioned.
To the OP: the nod goes to the 300 WM, IMO, but cost and recoil might be the most important factor in your decision. In that case, the 7mm RM prevails.