You cannot size 308 brass with a 30-06 die because the die will bottom out before the case neck is sized.
You CAN neck size 30-06 brass in a CONVENTIONAL 308 die. But it seems apparent that you have a collet die, not a conventional die.
If you still believe you have a conventional die, simply remove the expander and size a case. If you can insert a bullet into the neck, then either the sizer is bad or your brass has unusually thin necks. You shouldn't have thin necks with once-fired brass, but with brass of unknown origin there's a possibility the case necks have been reamed or turned to accommodate an undersize chamber. (Turning case necks is SOP for benchrest shooters.) I find it hard to believe your sizing die is bad, but after all we ARE talking about a Lee "Precision" product.
Just so we're on the same page, a conventional sizing die sizes the case neck in two operations: During the downstroke, the sizer enters the oversize case neck, which is then squeezed undersize by the die body. Then, on the upstroke the expander is pulled through the now undersize case neck, expanding it to the appropriate i.d.
A collet die sizes by squeezing the case neck between the body and mandrel. Naturally the case neck will spring back after sizing, so the mandrel has to be a bit undersize.
It seems you're not the only one to have problems with the Lee Wonder T*rd Collet Die; see the link below:
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a Company you can trust and have generous return policies! Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
About this site - Yesterday's Tractors is your one-stop source for antique tractors. If you are interested in older tractors you've come to the right place! Join more than 275,000 other classic tractor enthusiasts from all over the globe. We have many resources for antique tractor enthusiasts available including photos, classified ads, more than 24 tractor discussion forums, a show guide, values, specs and much more. Bookmark this site and come back often. Thanks for stopping by! Feel free to use our feedback form to send us your comments, suggestions and ideas.
