case separation

with the 300 win mag, i'd sort by tenths..see what i have and go from there.
my 300 win mag brass is 100rd lots of plus or minus 0.1......after full br prep.
mike in co
 
The best way to sort cases is by shooting them on the target. This isn't very easy to do but it's really the best way. Sorting cases by a tenth is more of a fad than based in any reality. How do you know where that tenth is. If your going to sort by tenths, you need to full case prep, fire form, clean, trim and then weigh. I am talking about short range BR. In long range, measuring case volume after fireforming is one of the best ways.

Hovis
 
he is shooting 300-600 with a 300 win mag.....
mike in co
HovisKM said:
The best way to sort cases is by shooting them on the target. This isn't very easy to do but it's really the best way. Sorting cases by a tenth is more of a fad than based in any reality. How do you know where that tenth is. If your going to sort by tenths, you need to full case prep, fire form, clean, trim and then weigh. I am talking about short range BR. In long range, measuring case volume after fireforming is one of the best ways.

Hovis
Click to expand...
 
Well i don't really understand how to separate cases by shooting them on the target... The most logic way to me is to measure the case volume... Even weighting them is quite strange, but i don't have any experiences so i can't be smart...
 
shoot the same load with a batch of cases.....rounds that appear out of the group for no apparent reason...the case is marked for foulers...
mike in co
trazman said:
Well i don't really understand how to separate cases by shooting them on the target... The most logic way to me is to measure the case volume... Even weig hting them is quite strange, but i don't have any experiences so i can't be smart...
Click to expand...
 
mike in co said:
shoot the same load with a batch of cases.....rounds that appear out of the group for no apparent reason...the case is marked for foulers...
mike in co
Click to expand...

This is usually done with loads that have been previewed, not when you are searching for a load am I wrong?
 
There has been a significant amount written about the effects of case body thickness runout on accuracy. NECO makes a gauge that can be used to measure this. http://www.neconos.com/details.htm (RCBS does also, but I don't care for their overall design.) This is not to discount weighing and sorting cases, just mentioning another significant variable worth considering. A friend, who has a mill and lathe, made his own body thickness runout gauge, and uses it to sort brass. It is a simple tool, and if I were working with almost any other caliber than the 6PPC, for serious target work, I would be using one.
 
to Boyd -

Any pictures or further descriptions of your friends tool, I would sure appreciate ..........

Happy Shooting
Donovan Moran
 
I sort cases by making my chambers fatter. The wider chamber base allows you to quickly sort cases for eccentricity, visually.

al
 
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