I prime my brass one at a time, no progressive loaders for me. I previously used a Lee hand primer, but, that starts hurting my hand after just a few times. So, I got a Lee bench mounted auto primer. This works great! Very little leverage is needed to seat any primer and it's fast. Sometimes tho the primers will get stuck and not feed right. No problem, just use a bent paper clip to dislodge the rascal. Plus it's way less expensive than other brands.