Loaded case grows after loaded

stpeterhunter53 · Mar 23, 2015

? after I load some rounds maybe a week later some of the case get a little longer did this two time on to diff. kind of brass what would cause this .

Cahunter805 · Mar 23, 2015

Compressed loads or not enough neck tension is what I suspect. What brand and type of dies are you using?

stpeterhunter53 · Mar 23, 2015

LAST EDITED ON Mar-23-15 AT 11:17PM (MST)[p]Rcbs dies I do not think they are compressed maybe they are ? 168 vld Berger 80 gr retumb it's happen like two or three times now only with the Berger in a 7 mm stw

Homer · Mar 23, 2015

impossible.....were you drunk when you measured???

stpeterhunter53 · Mar 23, 2015

Maybe it's a 7mm stw 80 gr of retumb with rcsb dies

stpeterhunter53 · Mar 23, 2015

Funny homer I do not drink

RELH · Mar 23, 2015

How much did it grow. If only a few thousand you could have a set of calipers that are off. Also calipers are not that accurate with most users. This is due to not using the same amount of pressure applied to the wheel when measuring. As stated above, if it is a compressed load, that could be your problem.

RELH

stpeterhunter53 · Mar 23, 2015

It grew 2 to 8 thousand I was hopping you would answer thanks Relh

ce61 · Mar 24, 2015

How did you measure the loaded round, from bullet tip to the case head? Many bullets vary in length if you measure from the tip. When measuring for length, you should use a bullet comparator that measures from the side or ogive of the bullet for a more consistent way to measure. ce61

440sixpack · Mar 24, 2015

As has been said a compressed load could squirt the bullet a little, nothing else is possible. so don't worry about it.

Stay thirsty my friends

1911 · Apr 16, 2015

If you ain't tampin' you ain't trying. I'm with Homer. Powder is pretty static and I don't see it altering overall length due to any normal powder load. Buy some new calipers.
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