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I know I’m the only guy shooting 11mm in a machine gun but hey, it was a fun project.
I found a box of .348 Winchester this weekend. Brand new Hornady brass from Sportsman’s wherehouse. It’s got a close case head to 11mm Gras. Not exactly the same but worth the try so here we go. New brass primed with CCI 250 magnum primers. Then 8 grains of bullseye pistol powder. Followed by a quarter cut piece of charmin toilet paper. Next it’s filled almost to the top with the wife’s cornmeal. All kept in place by another slice of charmin. All packed in tight. The first two rounds were the test to see if I had enough bullseye to complete fire forming. One case was annealed and one was not. It made no difference. All fired, all formed, all were reloaded again. 30 grains of IMR 4198 got 1400 FPS from a 405 grain flat nose lead cast boolit.

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Nicely done,Mike...!! There is a volume out there that helps folks make obsolete and hard-to-find ammo from contemporary made cases. Proper name escapes me right now,but it contains info on over 1,500 rds of ammo made from other cases.
 

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Nicely done,Mike...!! There is a volume out there that helps folks make obsolete and hard-to-find ammo from contemporary made cases. Proper name escapes me right now,but it contains info on over 1,500 rds of ammo made from other cases.

Are you thinking of the handloaders manual of cartridge conversions? Excellent book for turning this into that. It’s too bad .348 is hard to find. You make this change to 11 mm look simple.
 

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Man, could you imagine doing this a few months back... the cost of the Charmin would have driven the price of this project into the ground!

Thats pretty cool. I would say casting his own bullets would be easier than any of this. I found guy in England that did custom bullet molds where I got some obsolete French ball from the early 1800s.
 
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