Yes, velocity. Mainly based on your posts where you achieve major at 3.6-3.7 gr.
I adjusted my powder measure, then dropped ten charges, then threw that back in the measure. Then I measured 10 charges to establish where my measure was at. Then I started loading. Isn't that the normal method?
That's what I'm starting to think.
I haven't had a problem with the thousands of other rounds I've fired over my chrono. Seems a little harsh, but ok.
I don't get it either. That's the point of this post. I'm seeing what I believe to be temperature based velocity swings (which others have reported not to exist), and far higher charges than others have reported to reach the same PF. I loaded up about 200 4.2 gr bullets so I could dial in my sights better after doing the chrono session. I went ahead and fired most of them over the chrono because it was still set up, and I saw velocities that were consistent with my 10 round test group of 4.2 gr.