?turning case heads

[lpreddick]

i saw somewhere that a handloader was turning the head of cases using his wilson case trimmer. never thought of doing this, but i can see how it might help if there is varying thickness of a case head...this would malorient the case on the boltface with the case angled in the chamber if the case was full length resized. not sure if there is enough "slop" of the case to mal orient the bullet. tried this last night and it can be easily done with the wilson...simply turn the case holder around and turn the trimmer just a little and you can see brass being taken off with a slight variance around the head's rim. may be helpful with factory/range brass but suspect lapua and norma should be more precise. witchcraft or helpful?

 

[mr45man]

Witchcraft After the case is fired, it is or should be
square to the bolt face witch should be square to the chamber.
And another thing Just because you See brass being taken off
doesn't mean the brass is out of whack ,i have never seen a
case trimmer that was square to .0005 so you will see brass being shaved.
Try it with a few cases, Index the case and the shell holder.
with a Sharpe then rotate to a different position after a cut.
John H.

 

[navyrad8r]

zediker wrote about this in his reloading book. i can see it more in my brass that comes from my gas guns. i don't do it, but just wanted to see it. not as significant in bolt gun brass.
cheers,
doc

 

[jonbearman]

In some gas guns the extractor can bend a rim slightly and trimming the burr by turning the case holder backwards and turning off the hanger wont hurt a thing.