Originally Posted by Pieter Willem Vorster
Bart B, thanks for responding, but my question is not answered.
Is this your question?
If this is true, it is only necessary to sort a batch of cases by weight and not by volume.
Is there anybody with more knowledge about this who can sceintifically confirm my view?
I've shot sub 1/2 MOA (under 5 inches or 12.7 cm) 15-shot test groups at 1000 yards with two different 30 caliber magnum loads using cases sorted to a 1% spread in weight about 230 grains.
And 20-shot group at 800 yards under 4 inches (10.2 cm) from a .308 Win. with cases sorted to a 1% spread about 157 grains.
The most accurate (smallest) string of 10-shot groups ever made (as far as I know) were done with cases sorted by weight to a 1 grain spread of .308 Win. cases averaging 150 grains. Several groups were all under 1.5 (3.81 cm) inches and the smallest down to about 0.7 inch (1.78 cm). And a 40-shot group measured 1.92 inch (4.88 cm).
This is as good as anybody has shot anything with anything sorted anyway for the numbers of shots fired. I make no claim that it's scientific, but it's pretty close to being so.
Personally, I think it depends a lot on how one tests the results of different case sorting criteria. Some folks will get good results with any method.