45 acp case length

ECLIPSE45ACP · January 22, 2007, 09:14 AM

Hey guys ? on case length on a 45 acp. maximum is obviously .898,
what is th minimum length a case can be? I have found some that
are significantly shorter than that. Does anyone else find this odd?
I thought they lengthened when being shot?

singleshot · January 22, 2007, 09:28 AM

According to the SAAMI drawing it is 0.898-0.878 but I've seen some even shorter.

The .45 ACP is a pretty low pressure cartridge so case length really doesn't change much.

It hardly ever makes any difference either.

ECLIPSE45ACP · January 22, 2007, 09:33 AM

OK just want to follow all precautions to be sure. So .878-.898
is SAAMI specs?

thanks

Ausserordeutlich · January 22, 2007, 10:57 AM

Every .45ACP case I ever used shrank. I reload them until the necks split; never a problem.

January 22, 2007, 09:14 AM	#1
ECLIPSE45ACP Senior Member Join Date: January 9, 2007 Location: Omaha, NE Posts: 177	45 acp case length Hey guys ? on case length on a 45 acp. maximum is obviously .898, what is th minimum length a case can be? I have found some that are significantly shorter than that. Does anyone else find this odd? I thought they lengthened when being shot?

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January 22, 2007, 09:28 AM	#2
singleshot Senior Member Join Date: October 1, 1999 Posts: 162	According to the SAAMI drawing it is 0.898-0.878 but I've seen some even shorter. The .45 ACP is a pretty low pressure cartridge so case length really doesn't change much. It hardly ever makes any difference either.

January 22, 2007, 09:33 AM	#3
ECLIPSE45ACP Senior Member Join Date: January 9, 2007 Location: Omaha, NE Posts: 177	OK just want to follow all precautions to be sure. So .878-.898 is SAAMI specs? thanks

January 22, 2007, 10:57 AM	#4
Ausserordeutlich Junior member Join Date: May 27, 2006 Posts: 996	Every .45ACP case I ever used shrank. I reload them until the necks split; never a problem.