Trim length on 223

[Lloyd Braun]

The standard trim to length on the cartridge is 1.760 correct?

I have a friend that trims to 1.750, is this safe/ ok?

most of my once fired brass comes in around 1.758 for winchester and 1.753 for remmington, do i need to trim these?

im new to rifle reloading

thanks

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[deadeye]

1.76 is max length and 1.75 is the trim to length.

 

[Lloyd Braun]

is there a bottom to that?
if i over trim and it comes to 1.748 or so should i trash those?

 

[deadeye]

No that should not make a significant enough of a difference to worry about. The only issue would be if you over trimmed majorly it would raise the pressure a little, but that small amount wont matter.

 

[Lloyd Braun]

thanks for the help

 

[toolfan]

No that should not make a significant enough of a difference to worry about. The only issue would be if you over trimmed majorly it would raise the pressure a little, but that small amount wont matter.

If the OAL is constant, the shorter brass shouldn't have higher pressure.

The problem would be that the shorter cases won't grip the bullet as tight, and you get inconsistant crimps with inconsistent brass length.

 

[jib]

If the OAL is constant, the shorter brass shouldn't have higher pressure.
The problem would be that the shorter cases won't grip the bullet as tight, and you get inconsistant crimps with inconsistent brass length.

I agree with toolfan.

 

[Spitpatch]

I agree with toolfan.

(note: I did not cut and paste my response from another source, and any resemblence to any other response is purely coincidental).