Forming 6.5 CM from 243

my human host

miasma
Full Member
Minuteman
Feb 19, 2012
520
104
Marshall area, MN
Fellas,

I picked up a used 22br form die set a few years back and have been looking for an excuse to use it. Way back when, Remington used to sell a basic br case. Pretty much just a 308 with a small primer pocket. The die set I have was made to take the basic brass and form it down to 22br dimensions in several steps. Long story short, the 22br and 6.5 CM share a similar shoulder angle and diameter. I decided to use the first couple dies in the set to make some Creed brass out of 243 Win.

A bit of experimenting showed that Win brass would buckle unless I annealed the hell out of it, but Remington brass worked fine the way it came out of the box.

Here's a Rem case after die #1

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and after die #2



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I'm going to fireform these with Unique and Cream of Wheat, so that's as far as I needed to go with the forming.

The case after trimming.

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500 pieces trimmed, deburred, and ready for fireforming.

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Finally, a fireformed and neck turned case.

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Now, I'll be the first to admit this isn't saving me any money after my time is figured in. The fireforming isn't to form the case, it's a way to remove the runout from the forming process without wasting a bullet. They may have shot reasonably well the way they were, I didn't try them. I used an old barrel and spare action to make a fireforming rig. Got about half of them fireformed today. I havent lost a single piece out of the 500 so far.

This brass is earmarked for a 123 grain amax p dog load. I'm comfortable saying I can deal with donuts if they become an issue.