SAAMI Specs 223 Rem

steve4102 · October 20, 2014, 11:32 PM

What is the Minimum case length for the 223 Remington according to SAAMI?

I have found to different diagrams.

This one Looks Official and says 1,760 - .030.

http://www.saami.org/pubresources/cc...0Remington.pdf

This one is from SAAMI's web site and it says 1.760 - .020. Page 41.

http://www.saami.org/specifications_...wnload/206.pdf

Which one is correct?

Snyper · October 21, 2014, 12:14 AM

Either will work.

One will just need trimming a little sooner

.010 won't make any practical difference

steve4102 · October 21, 2014, 01:13 AM

Thanks, but I'm more interested, curious as to why there are two different specs. One of them has to be wrong, no?

FrankenMauser · October 21, 2014, 01:53 AM

The file in the second link is a document that's about 10 years older than the first link.
It's likely that, some time prior to the update, a SAAMI member asked for more leeway with the cartridge, and the board said "Hell yea! Lower quality standards all around! More profits!"

(Remember - SAAMI members are all for-profit ammunition and/or firearm manufacturers.

)

Neither is wrong.
They're just from different time periods.

steve4102 · October 21, 2014, 08:32 AM

Thanks.

**Unclenick** · October 21, 2014, 12:39 PM

It could also be the NATO spec changed to allow for the tolerances of all the various member country's ammo, so SAAMI copied it. I don't know. I do know SAAMI and CIP have had talks about how they might better standardize each other's methods and drawings and so on. So more changes may be in the offing. I just have no idea when. Years, seems likely.

Lots of M14 shooters used to trim their ammo back -0.040" when the cases were new, just so they wouldn't have to trim them again during the life of the case.

Hummer70 · October 22, 2014, 08:52 AM

As well bolt gun shooters will trim theirs upwards of .020 for the same purpose.

Bart B. · October 23, 2014, 10:14 AM

Deleted

steve4102 · October 23, 2014, 04:14 PM

Thanks Bart, thought were were discussing SAAMI case dimensions and case length, but OK whatever you want to talk about is fine with me.

October 20, 2014, 11:32 PM	#1
steve4102 Senior Member Join Date: December 23, 2005 Location: Minnesota Posts: 2,968	SAAMI Specs 223 Rem What is the Minimum case length for the 223 Remington according to SAAMI? I have found to different diagrams. This one Looks Official and says 1,760 - .030. http://www.saami.org/pubresources/cc...0Remington.pdf This one is from SAAMI's web site and it says 1.760 - .020. Page 41. http://www.saami.org/specifications_...wnload/206.pdf Which one is correct?

October 21, 2014, 01:53 AM	#4
FrankenMauser Senior Member Join Date: August 26, 2008 Location: In the valley above the plain Posts: 13,776	The file in the second link is a document that's about 10 years older than the first link. It's likely that, some time prior to the update, a SAAMI member asked for more leeway with the cartridge, and the board said "Hell yea! Lower quality standards all around! More profits!" (Remember - SAAMI members are all for-profit ammunition and/or firearm manufacturers. ) Neither is wrong. They're just from different time periods. __________________ -Unwilling Range Officer -Unwilling Match Designer -NRL22/PRS22/PRO -Something about broccoli and carrots

October 21, 2014, 12:39 PM	#6
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,743	It could also be the NATO spec changed to allow for the tolerances of all the various member country's ammo, so SAAMI copied it. I don't know. I do know SAAMI and CIP have had talks about how they might better standardize each other's methods and drawings and so on. So more changes may be in the offing. I just have no idea when. Years, seems likely. Lots of M14 shooters used to trim their ammo back -0.040" when the cases were new, just so they wouldn't have to trim them again during the life of the case. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle Last edited by Unclenick; October 21, 2014 at 12:53 PM.

October 23, 2014, 10:14 AM	#8
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	Moved to another thread Deleted Last edited by Bart B.; October 23, 2014 at 07:35 PM.

October 23, 2014, 04:14 PM	#9
steve4102 Senior Member Join Date: December 23, 2005 Location: Minnesota Posts: 2,968	Thanks Bart, thought were were discussing SAAMI case dimensions and case length, but OK whatever you want to talk about is fine with me. Last edited by steve4102; October 23, 2014 at 06:44 PM.

October 21, 2014, 12:14 AM	#2
Snyper Senior Member Join Date: December 16, 2013 Location: Eastern NC Posts: 3,047	Either will work. One will just need trimming a little sooner .010 won't make any practical difference

October 21, 2014, 01:13 AM	#3
steve4102 Senior Member Join Date: December 23, 2005 Location: Minnesota Posts: 2,968	Thanks, but I'm more interested, curious as to why there are two different specs. One of them has to be wrong, no?

October 21, 2014, 08:32 AM	#5
steve4102 Senior Member Join Date: December 23, 2005 Location: Minnesota Posts: 2,968	Thanks.

October 22, 2014, 08:52 AM	#7
Hummer70 Senior Member Join Date: June 22, 2009 Location: South Carolina Posts: 203	As well bolt gun shooters will trim theirs upwards of .020 for the same purpose.