LC 223 brass trim length ?

[rebs]

In general to what length do you trim this brass for your bolt gun ?

 

[ole-has-been]

Max length for me is 1.760
Trim length would be no less than 1.750

 

[Richard Jones]

Measure your chamber length, trim accordingly.

 

[Hoser]

I trim to 1.745

By the time it needs trimming again I have either lost it or the primer pocket is toast.

 

[Twicepop]

I trim to 1.750" if I can, I had a bunch of Federal brass that all had to be trimmed to 1.740" to make them uniform. A few of them barely made that. I had a few older pieces of fired military 5.56 brass that went 1.785" and didn't show any signs of creating a problem in the gun they were fired in.

 

[Bill K]

I trim as the book says for minimum. 1.750

 

[jelenko]

Isn't the SAAMI min 1.740; max 1.760 - with a nominal trim length of 1.750?

 

[TheOtherZilla]

What the book says. Which is like 1.750"

 

[Hoser]

Lots of Federal factory ammo runs about 1.735-745. Really short stuff.

1.745 cleans most all of my brass up.

 

[riflewoman]

SAAMI calls for a minimum chamber to have the neck portion of the chamber at 1.772 from the theoretical breech face. The cartridge case has a corresponding maximum case length of 1.760 with a one way tolerance of -.03. So, I usually set my trim machine to give me cases 1.745 to 1.752 long. If I get the case in that dimension I know it will work, give good accuracy and I won’t have to trim it until at least two firings from an AR.

 

[ole-has-been]

SAAMI calls for a minimum chamber to have the neck portion of the chamber at 1.772 from the theoretical breech face. The cartridge case has a corresponding maximum case length of 1.760 with a one way tolerance of -.03. So, I usually set my trim machine to give me cases 1.745 to 1.752 long. If I get the case in that dimension I know it will work, give good accuracy and I won’t have to trim it until at least two firings from an AR.

Well stated my friend.
Your specs are dead on as for SAMMI. As I posted in a previous reply , I trim to 1.750.
But like you, by checking with SAMMI, one will find that 1.730 is allowable and MAY let one use a case that might have been thrown away. As always, use caution and inspect casings.
God speed.

 

[JB10]

About 1.745 works for me. Less to trim next time arround.