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OK. It doesn't look like I am slapping the face of orthodoxy here.
Here's my current situation. My barrel has been machined and should be parked on Wednesday if all goes to schedule. With luck, I will have it in hand sometime next week, ready to shoot. I won't have a suppressor for some time :(
On the ammunition front, I have some leftover 220 SMKs I was thinking of using to fire form some brass that I got from 320pf. I also have 240s, but I want to save them for formed brass. I've got all the dies I need.
Hopefully I can tell the difference between sub and super by ear. I have a chrony F1. It's pretty basic and does not remember shot velocities for printing out. But it worked last time I took it out. I mention this because I don't know _when_ a round will make the transition.
And I certainly have no way of telling how quick the transition is! Anyone want to fund 200 ten thousand frame per second cameras for setting up along a firing line at 1 meter intervals? Or perhaps 20 would be enough at ten meter intervals.
As a post script, I would like to mention something Julian Hatcher wrote in his notebook. When firing bullets straight up, most of them fell base first. So they do keep spinning. While the rifling will obviously make the air flow non-laminar (at least that would be my expectation), I don't know what sort of drag force there is on the spin of a bullet. Spin slows down a lot less rapidly than a super sonic bullet does though.
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