ORIGINAL: Rifle Loony
I've seen just the opposite, from my experience...
It's best used though,as an extreme example rather than practice, in that we'd all likely agree that same brand brass is a given if some measure of consistancy is expected. Where the extreme of trying an OCW load in different brass becomes a good example is showing that thelesser differences in same brand/lot #brass become even less of a factor.
IOW, I'd hope we can agree that a huge difference in case capacity between brand X and brand Y is "not reallya good thing", but a smaller difference across a lot # of brand X,OR brand Y is even less of "not reallya good thing". For that reason, and with the example of "different brass", I've found that weighing cases in the same lot#is largely a waste of time, when an OCW load is involved......
I'm all for simplicity in obaining good results from a complicated system.....
OCW and various case brands totally work against each other. It violates the OCW whole idea of finding harmonic nodes. I have found situations where remington can hold1 more grain or morethan Norma, or Federal. Ladder methods just won't fly with that. Well, with people who understands what the method is about anyway.
Do you have any idea how many articles in Rifle mag, Precision Shooter, etc has been wrote on this stuff?
If you find it works for you, then your set. I suggest everyone tries it and find out what its all about. I just know I sure won't use it as the only method for load development. some powder/ load combos won't work with any method and clutters the data even more.