Forming 25-06 brass from 30-06 brass.

crapshoot

crapshoot

Well-known member
I have a bunch of 30-06 range brass that that I can't seem to give away unless I lie and say it is once fired, which I can't verify. I sold the 30 cal but still have a quarter bore. Can I simply run them through a FL die or will I run into problems with the necks being to thick? I know I will have to trim the length.
I did a sample and noticed a ring between the neck and the shoulder. Also a 2-3 thousand difference in OD and ID neck size.
Factory ruger rifle with factory chamber.
Discuss.

 
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Resize to your hearts delight. You should have no problem at all. The only difference between the two is caliber, I've done it plenty of times, I wouldn't use them for fancy competition (which I don't do and nobody uses an 25-06 for) but for everything they work great.

I've often wondered if there was some way to change the case markings but the calibers are so dissimilar that it's easy to tell them apart. I do 30,to 25 in the '06, and 25 to 22 with 250 Savage/250-3000 Savage brass.
 
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With a factory rifle, it should have enough chamber space for the thicker case. Best way is to load one up with a lower end powder charge, measure OD of the loaded neck at the mouth and then fire it. Then measure the neck at the mouth after its fired. Also see if you can slip a bullet into the fired case before it's resized. If it slips in easy, your chamber has enough room to let the mouth properly expand with firing. If you can not slip in a bullet easily, you might need to turn the necks a little to let them clear.
 
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I have always made .25-06 brass from either .30-06 or .270 Win brass. Since I have a .30-06 now, I use .270 brass. There has never been a problem with necks being too thick with either caliber. Many of my non-reloading friends give me their .270 and .30-06 once fired cases.
 
The ring between neck and shoulder will all but disappear upon
the first firing.

In '74 I got a bunch of military brass which required first
forming in a .270 die then to the .25-06 die, but that's the
only brass that caused me any problems.
 


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