I'm a bit of noob at this, and you guys are tossing out terms I don't know much about. Couple of responses:
1. First re-sizing was with a 30-06 die set I bought from the Fire Classifeds that turned out to be "small base" dies. They were a bit hard to size with, so I replaced them.
2. I'm using new bought RCBS dies on now, which were used on the other 2nd and 3rd re-sizings.
3. I follow the "generic instructions" in the box. I don't "adjust the die to suit the chamber". New on one me. Please fill me in.
4. I don't have a neck sizer die. Maybe I need one? I likely won't relaod 30-06 a LOT once I have a load developed, but I'm all for buying the right tools for my hobbies!!
5. Maybe the head space concern is real. Even the 56gr loads had pretty flat primers.
I like your honesty. Good to see someone wants to learn the right way. Check out mathman's instructions on how to properly adjust your dies and you'll be golden. There's a lot to properly adjusting both your FL sizing die and your seating die. I haven't read through mathman's lengthy post and instructions, but I know how he works and he's usually spot on...