The Down Range Forum
Member Section => Handguns => Topic started by: TAB on March 27, 2008, 03:44:46 PM
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So I just got done tumbling my 10mm brass and noticed I had a few 40 S&W cases. It got me to thinking, lets just say I was asleep at the switch and reloaded these. If they some how managed to actually make it to the delta elite, had a good prime strike and went bang... what would happen?
I'm thinkling maybe a squib do to lots of unburned powder, do to lack to bullet seating depth...
Any ideas?
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I would bet that the bullet exits the gun. Hard to guess what happens. ??? I wouldn't do it on purpose!!
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I remember an article in a gun-mag a few years back where the author chambered some .40 S&W factory loads in a 10mm and fired a few off. The extractor had to hold on to the cartridge so the firing pin can whack the primer. I remember the article said the gun fired ok enough, but the accuracy really suffered.
Now, if you put 10mm worth of powder in a .40 S&W case, then load up, all bets are off. Bad things are very likely to happen.\
Just be careful in sorting out the brass. Luckily it's easy to tell between .40 S&W and 10mm.
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I am mildly surprised that no one has said it yet, but I will: Never fire a cartridge in a firearm for which it is not chambered. Safety first, scouts. Regarding the 10mm Auto versus the .40 S&W, there was, once upon a time, the Peters-Stahl multi-caliber conversion pistol with dual extractors that provided strong enough tension for proper headspacing to switch calibers. These units though never caught on. There is also the interesting S&W 610 revolver that, per the manual, can use .40 S&W cartridges because the moon clips help provide proper headspacing. Other than these two examples, don't do it. Inspect your brass and finished cartridges when reloading.