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last night I tried something I though wouldn't work but turned out to be awesome.
Using a v-block with one clamp on a broken 3/8 EM as a stop and the top clamp with a delrin bumper holding the case I was able to pound through them with a 1/2" carb EM at 2400 rpms. I had a small strip of tape at the top to take care of the case taper. I thought the case would get crushed but it took very little pressure on the bottom half to keep it from spinning. The cases came out with a very small burr and were very consistent in OAL. Just had to blow off chips on the stop every 4 or 5 pcs.
I know some people don't have access to a milling machine capable of this but a drill press should work almost as well if you can clamp the v-block down tight and a chuck big enough.
Nick
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