Are you full length or neck sizing? Are you possibly bumping the shoulder back too far? Are you shooting a crimp? Check these things out first. After you have sized, trimmed, and cleaned one of your cases, do a smoke test. Smoke or blacken the case, then chamber it. This will show you if you are bumping the chamber. I like my shoulders and necks tight-I believe this increases consistency.
As you stated your load could be a little hot, but I do not think so. If the load was hot the cases would stick a bit, and you did not mention that. I have noticed over the years that spin off calibers are slightly over-chambered(30-06 to 25-06 or 308 to 7-08). You could have an over sized chamber, Tom.