I'd be checking/adjusting the final crimp station and running them all through that station again if that's the issue.

theo have you solved the problem yet...if what the guys said about final adjustment dont help it may be that your chambers mite be a little tight...you said they fierd fine in youbuddies guns...i have a old single barrel that some factory ammo dont go in the chamber to good you can push the ones that are to tight but then it will not eject them and you have to use a long metal rod to push them out...i need to emory cloth the chamber but have not done so yet....hope you have solved the problem.... charlie

Here is a quick method of finding out if the mouth of the reloaded case is flared from too much pressure in the final crimp stage. Using a vernier caliper with a dial indicator (if you don't own one, you should) check the dimension of the base (.745) where it meets the plastic hull. Then check the dimension of the mouth of the case. The mouth, when crimped right, should be about ten thousandths smaller than the base where you measured it. Your cases will drop in and eject without trouble if those dimensions are correct. JF

Charlie, thanks for asking. I sold all my hand loaded ITX shells to my buddy and bought ITX factory loads. Waterfowl season is opened and I have run out of time to correct the problem.

After the season, Ill have my reloader adjusted by MEC ( advantage of living near the factory), and will have my Parkers chambers reamed to modern 12ga. standards.