40 S&W cases length.


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Hardatwork
December 5, 2007, 02:31 PM
Cases for 40 S&W are according to the reloading manual should be 0.850 in length. When are they to short for reloading? I have some that are 0.839. Thank You

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rcmodel
December 5, 2007, 02:38 PM
That .850" is MAX length.

Hornady says "Trim too" length is .845"
Speer says it is .840".

Another .006" or .003" shorter isn't going to hurt a thing.
Shoot them!

http://i81.photobucket.com/albums/j219/rcmodel/KTOG/1224.gif
rcmodel

Hardatwork
December 5, 2007, 02:50 PM
IF 0.840 is OK should I trim them to the same height so I will get the same crimp?

Walkalong
December 5, 2007, 03:02 PM
It is not going to make any difference you will see on target. I have never trimmed any auto brass.

rcmodel
December 5, 2007, 03:15 PM
I assume you are taper crimping them in the standard seating die, or using a Lee FCD.
Regardless, length will not matter on any straight-wall pistol caliber.

Just sort them by brand, or length, or whatever, and load them.
At most, you might have to give your seating/crimping die a slight tweak, but probably not.

And I'm with Walkalong.
I have never trimmed, or worried about case length, on any straight-walled auto pistol brass in 45+ years reloading them.

For anything else from the .25 ACP through the .45 ACP, I've never trimmed or measured one in my life.

http://i81.photobucket.com/albums/j219/rcmodel/KTOG/1224.gif
rcmodel

Hardatwork
December 5, 2007, 04:08 PM
OK Thanks just wanted to Be safe.I have loaded these a few times and noticed that they were different lengths.Thanks for your help.

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