Thank you for the info D-A. I was flattening primers and had a slightly heavy bolt lift at a pretty low load. I at first just attributed it to a tight barrel with fast twist, but I think I have figured out the problem. I wasnt running the cases through an expander mandrel after I necked them down with a 272 bushing. They didnt feel that tight when I was loading them, but I guess they were pretty tight. I discovered how tight they were when I tried to pull a bullet to check a charge. I will retry the retumbo as it was the most accurate load I tried today, but could only squeeze 2800 out of it w/o pressure signs.