I would be a lot more fond of the WSM's if I could get 4 in the magazine. Bought a PTG canoe floor plate for a Remington 700 short action and it still doesn't hold 4 in a way that they can feed reliably. Can't modify the canoe floor plate because it is made of aluminum. With the .338 RCMs it doesn't take much modification to hold 4 in the mag and feed reliably.