I've used a regular staggerfeed LA for a number of short action builds, didn't change a thing and they fed fine.

Rifle started out as a Stevens 200 30-06 (IIRC) unscrewed the barrel, had the action T&T'd, installed a RB trigger and started shooting. It's been everything from a 243 to a 7mm-08 to a 338-06 and about to be a 300 win mag.

Long actions shoot just as well as the shorts, they're just more versatile.