Loaded up 100 380 acp's with some 90 gr. Speer Gold Dots. Seated them to .974 over 3.1 grains of BE. Pop'ed one in the mag and snapped the slide and chambered just fine. So I taper crimped them all and then decided I would load up the magazine and upon loading round #2 knew Houston had a problem. COAL was too long for the magazine. Didn't have a issue with one cause the nose isn't buried inside the mag housing, Ugly. So I ended up just having to nudge them down to a COAL of .965 and all is well. Let that be a lesson on auto loaders, make sure action will go to battery, but at the same time be sure the overall length will work inside the magazine. Sometimes it's easy to forget the simplest of things.