Author Topic: I have an idea for a new autoloading cartridge.  (Read 7706 times)

sqlbullet

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Re: I have an idea for a new autoloading cartridge.
« Reply #45 on: July 12, 2017, 11:57:47 AM »
OK, a 357 SIG is just a .40 cal S&W necked down to 9mm. I wonder what kind of velocities you could get if you necked down a 10mm to 9mm? Would it actually approach or exceed a .357 Magnum?

Pretty sure you would get 9X25 Dillon velocities, since that is what a 9X25 Dillon is.   :P

my_old_glock

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Re: I have an idea for a new autoloading cartridge.
« Reply #46 on: July 12, 2017, 01:33:02 PM »
OK, a 357 SIG is just a .40 cal S&W necked down to 9mm. I wonder what kind of velocities you could get if you necked down a 10mm to 9mm? Would it actually approach or exceed a .357 Magnum?


http://10mm-firearms.com/wildcats/357-sig-long-neck/


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Overkill338

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Re: I have an idea for a new autoloading cartridge.
« Reply #47 on: July 15, 2017, 12:07:08 PM »
OK, a 357 SIG is just a .40 cal S&W necked down to 9mm. I wonder what kind of velocities you could get if you necked down a 10mm to 9mm? Would it actually approach or exceed a .357 Magnum?

A 357 SIG is 23mm and a 40 S&W is 22mm, the 357 SIG round came from the 10mm.
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gandog56

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Re: I have an idea for a new autoloading cartridge.
« Reply #48 on: October 03, 2017, 07:07:11 PM »
Then why are the no longer than my .40 cal S&W's? I use the same magazines for both when I swap out the different caliber barrels for my SIG P229.
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sqlbullet

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Re: I have an idea for a new autoloading cartridge.
« Reply #49 on: October 03, 2017, 09:43:41 PM »
Brass length is not COAL length.