I set up the chrony and ran my load over it, not exactly what I expected. The Norma folks indicated that with a 24" barrel and 55.6 gr of 204, and a Hornady 168 gr . BTHP, I should get 2844 fps. The mean was 2549 fps! SD was 27, extreme spread was 57. I even crimped it with a Lee crimp die that I picked up yesterday for $15.00. Still just neck sized though. The 5 shot group was still tight at .792". The only thing that I did differently was to not use a magnum primer.
I also tried a Nosler 180 gr. partition under 53.4 gr. of 204, Norma said I should expect 2612 fps, my mean was 2545, SD 23, extreme spread 69. Did not use a magnum primer with this load either. This was, however, the tightest group I have ever gotten with a partition, .819".
I am going to retry the above with a WLRM primer and see what happens.