I have to be honest with you, I don't trust the looks of those groups. all but one of those looks like a tighter 2 shot "group" plus a flier. I would want to see either groups with more shots, or more groups of 3 shots.
sometimes a rifle likes what a rifle likes, and the only thing you can do is figure out what it likes. It doesn't matter what you want it to eat. Much like children if you force feed them what you want them to like, you should expect less than desirable results. I have one barrel that, for whatever reason, shoots better with a Spitzer designed Game King series bullet, than any of my SMK pills I have tried to push through it.
Try some other loadings if you want better results, as you never know where you might find it. Different manufacturers will use different powders, neck tension, and seating depth - even though they all load the same projectile into their cartridge. When you're trying to shrink things that are already hovering at and below MOA, those factors all contribute, especially in an auto-loader.