243 Headspace

[rmtaylor]

I just ran into something interesting and it may be normal, I don't know. I have a Stoney Point head and shoulders gage and was checking the headspace. Here are the results:

WW New Brass 1.618
WW once fired from the same batch 1.618
After Full length Resize 1.619

Does that make sense?

Remington Brass(same gun, 243 Handi)

Using the same die
Once fired 1.623
Full length resized 1.621

It is close but just did not make sense. By the way I checked 5 of each so this is not just a sample of one.

Richard

[waterfowlhunter]

In my experience cases tend to grow when resized.  that is the reason that RCBS came out with the "X" Die series.  these dies limit the growth of the cases during the sizing process.  That is also why it is a good idea to trim your brass after you size not before.