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Old February 10, 2013, 02:51 AM   #1
jimmythegeek
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Got some short brass- ok for plinking?

I'm loading .30 carbine and the trim-to length for brass is 1.286". I've measured a bunch and anything between 1.280 and 1.285 I've set aside. (I'm trimming anything over 1.288).

Since the M1 Carbine is not a precision instrument anyway, I thought I could use that short brass for plinking ammo. My kids can't hit anything anyway Am I on drugs? is .006" far enough off to be dangerous?
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Old February 10, 2013, 03:52 AM   #2
dacaur
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I dont know where you got a trim to length of 1.286", but for .30 carbine maximum lenght is 1.290", and the "trim to" length is 1.280" So it looks like you are fine. It headspaces on the case mouth, but even if its a bit under 1.280, my guess is the extractor would still hold it well enough to fire.
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Old February 10, 2013, 11:02 PM   #3
Sevens
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Let me tell ya from experience that if you trim .30 Carbine a wee bit too much... a .30 Carbine Ruger Blackhawk will not light them off. And if that's the only .30 Carbine you own, they become recycle fodder.
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Old February 11, 2013, 01:30 AM   #4
jimmythegeek
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Got the trim-to from a book

"The Complete Reloading Manual for the .30 M1 Carbine"

It's a compilation of various bullet and powder manufacturer's recipes. It does show Sierra says 1.280 (1.285 for the Blackhawk).

Hogden says 1.285, Lyman 1.286, Speer 1.280.

The Lyman Reloading Handbook 49th ed. repeats the 1.286 value in their section of "The Complete Reloading Manual", but with more bullet options.

I started with .30 Carbine because it's an easy cartridge to reload (and kind of pricey for factory ammo). Sigh.
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"Jeez, man, what's another word for 'stupid?'"
"Tactical." -Tom Servo
Marlin 795, 795ss, 39A Mountie, CZ-455 American, CZ-452 Scout, CZ-75 Kadet, AOM160 M1 Carbine, USGI M1 Carbine, M1 Garand, Dan Wesson PM7 1911
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