Thought reloading would be a lot easier to set up, but I ran into some issues and wasted a bunch of brass to try and set it up properly. I`m using a full length x die and fiddled with the settings to get my 1.626 for my headspace on the brass and once I resize the brass it shrinks.... What to do next ?
When you run a piece of fired brass into a full-length die, it does indeed squeeze it back into the same, smaller dimensions as it was before you fired it. When you fire a round, the brass expands against the bolt face,and expands to contact and cling to the sides of your chamber. That's why you should try and keep oils out of your chamber. If the expanding brass hits the chamber walls, but slips back toward the bolt due to a greasy/oily chamber you greatly increase the bolt thrust your bolt experiences from that piece of just fired brass. Ideally the brass then springs part of the way back and this allows the extractor to drag it out and the ejector pops it out when the case neck clears the chamber walls.
You collect all that brass, deprime it, clean it and resize it. I'm not sure what you're talking about when you describe what you're doing and that it is giving you trouble.
Your full length sizing die should reshape your brass to SAAMI specs (S
rms and A
nstitute specs). All manufacturers adhere to a common set of measurements for all cartridges commercially produced. That way you can shoot just about any brand of 308 Win through your M1A and not worry that one is going to be too long and end up jamming your gun.
Are you trying to shoulder bump your brass by adjusting the die? If so, why? Perhaps I'll learn something here too.