Brian, I considered that, but figured if I cleaned at a regular interval and waited between groups until the rifle barrel had gone cold again (which I did), it would be a good test. And I did FL last, thinking that if I had fouled the barrel too much with all that shooting and possibly not enough cleaning, then it would impact the FL test the most. But, the FL group was still smallest. And today was nearly a perfect day to shoot. Minimal breeze and cool.
And I ordered that Lee die today because you, and others probably, would like that as part of the test. And, as with all the other comparing I've been doing, the Lee die needs to be part of my testing. I've enjoyed this, though it hasn't shown the results I expected to see. I burned a lot of ammo today, and thank goodness it wasn't my firm kicking 270.