Sometimes I type before I think. I was just pointing out that differences in case capacity make a difference with methods other than OCW, but I realize you never said they didn't. I actually just saw an article about brands of brass. The cheap stuff grouped almost as good as the expensive stuff. I don't know if they grouped in the same place, as and OCW load should.

I know quite a bit about OCW in theory, I have been trying to put it in practice.

I haven't had a lot of success. I am too much of a dabbler, I buy one box of bullets and then get something else the next time. Same with powder.