All cases weighted within the same limits. Low and high within each group were about the same difference as low and high between each group 5 grains low or high from mean was across the board.
All cases held the same amount of powder, about 3 gr deviation from standard
With a ball micrometer measuring the sectioned cases, there was a difference of taper between the web and the shoulder, but no case was consistantly thicker across the board. Again, there was variance within the brands that was similar to between the brands.
If there is a difference, it is on the spec sheet and the actual cases that make production really are not different. Short of a benchrester trick of matching cases, no one will see any difference. a 93 gr case has the same volume in every brand as any other 93 gr case. I think we worry about a factor that really isnt there.
Statistical science would require the test repeated 1000's of time, but my findings convinced me no to worry
Thanks for listening
All cases held the same amount of powder, about 3 gr deviation from standard
With a ball micrometer measuring the sectioned cases, there was a difference of taper between the web and the shoulder, but no case was consistantly thicker across the board. Again, there was variance within the brands that was similar to between the brands.
If there is a difference, it is on the spec sheet and the actual cases that make production really are not different. Short of a benchrester trick of matching cases, no one will see any difference. a 93 gr case has the same volume in every brand as any other 93 gr case. I think we worry about a factor that really isnt there.
Statistical science would require the test repeated 1000's of time, but my findings convinced me no to worry
Thanks for listening