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View Full Version : Case trimming and max case length.


Rnelson11
03-28-2006, 05:51 AM
What do you accept as your maximum case length before you trim?
What do you trim to? (I trim to 1.128"-1.130")

Medula Oblongata
03-28-2006, 07:58 PM
Max length 1.1355"
Trim to 1.1280"

If I use moderately loaded rounds I get two firings between trim jobs. Low pressure I get 4. With my +P I trim every time, and relegate the brass to 55grn sub-sonic after the second +P firing. I relegate my +P+ to SS after the first firing (and sometimes have to throw it away).

msw
03-28-2006, 09:33 PM
MO--can you define +P and +P+ based on your powder loads?

I just spent 3 hours decapping brass--next it's off to the sink for a Simple Green bath, then it sounds like a trim is in order....

I'm gaining on it.

RNelson11--thanks for getting to this before I did--seems 1.1280" is where my brass is headed...

Medula Oblongata
03-28-2006, 09:45 PM
MO--can you define +P and +P+ based on your powder loads?

I just spent 3 hours decapping brass--next it's off to the sink for a Simple Green bath, then it sounds like a trim is in order....

I'm gaining on it.

RNelson11--thanks for getting to this before I did--seems 1.1280" is where my brass is headed...

I will not post the loads for my +P+ on the boards. I will PM them to you in the morning (remind me, Im on my laptop at an airport heading home right now). I am too concerned that someone will use unsafe brass or technique and have a KB, and Ill get blamed for it. That and I dont ever want anyone to get hurt or damage a weapon.

scout58
04-08-2006, 09:25 PM
I measured a 2nd fired case prior to sizing at 1.123". It was previously trimmed to 1.128". After sizing it measured 1.133". Is it typical for a case to grow .010" inch from unsized to sized? I assume it's because of the shoulder deformity from the 5.7 pistol blowback design..

Also, my load data is 6.2 gr TB, 35gr Vmax, and CCI 400 primer with 1.460 O.A.L.

748
04-08-2006, 10:21 PM
Fireing them in a pistol mess them all up. The shells get long quick.
M.O. can you PM me your power loads?
I don't think they could be any more dangerous then what I loaded and fired to day.