If you buy a Hog Hunter it will be a Center feed. If you buy some donor action or rifle the center feed is the most recent production and has the most available aftermarket support.

You are looking for a short action.

The older stagger feed has a smaller action screw spacing(4.27). The mag attaches to the action.

The center feed has a better DBM setup. If it is a blind mag the mag stays in the stock. The action screw spacing is an eighth longer.

outside of the magazine operation the rifles function identically.