If it's blind mag and the mag box is attached to the receiver it is staggered feed, if the mag box stays in the stock when the receiver comes out it is center feed. If it is the new style DM(release on the bottom) or hinged floor plate model it is centerfeed. Old style detachable mag(release on the side) it's staggered feed. WSM rifles are short actions, so not 111s but the staggered feed models are CRF and the center feed models are push feed.