Reply to Thread

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Message: <blockquote data-quote="Larry Morgan" data-source="post: 2761080" data-attributes="member: 4676">You will get widely varying opinions as far as accuracy goes. Two schools of thought. 1) Neck sizing allows rounds to fire-form exactly into chamber, thus better accuracy 2) FL sizing every time resets the brass to the same dimensions each time, enhancing consistency and therefore accuracy. You can find benchrest and match shooters using both methods with great success. As far as brass longevity, neck sizing only seems to be the obvious winner. However, how much it might help is dependent on your rifle. In my case, I am very lucky. I managed to get a factory 700 with essentially minimum headspace. Even when I let my FL sizer bottom out on the shell plate, it only moves the shoulder back 0.001 - 0.0005" from fire-formed dimensions. If your chamber is more loose, you can expect case head separation to sneak up much faster. So far the only failure I have experienced is a neck crack. My FL sizer works the neck just a bit more than it needs to, but not bad. This could be solved by a Redding Type S die, and I might do that some time in the future.</blockquote>