UNCCgrad,

You might also check the straightness of the bullet-seating in your handloads. That can make a big difference, and is often why factory loads shoot better than handloaders: Factory brass is right out of their forming die, which means the neck is straight. Standard loading dies often pull the neck a little out of alignment when it passes over the expander ball.

You don't need a fancy tool to check bullet alignment. Just roll your rounds over a hard, flat surface. If you can see the bullet tip "wobble" as one rolls, the bullet isn't aligned very well with the case body.

A final check is shooting a couple of groups with "wobble-free' loads, and then a couple wit the ones that wobble.

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