Thanks for the link to the parallel thread...I'll post here re: 155 grain and watch the other for your test results.
I've go a few 300BLK rigs (in fact, might need to thin the ranks a little)
Rem 700 AAC-SD, 16" barrel, 1:7
AR, 16", 1:8
AR, 10.5", 1:8
Right now all my data is out of my 16" guns.
In addition to more down range energy (on paper anyway), another reason I went with the 155 grain loads was to make a little better use of my Nikon Scope with the BDC when switching between super and sub-loads. I had found that zeroing for the lighter 110-125 grain bullets left me needing too much hold-over for subs to make use of the BDC reticle(s).
I just got a magnetospeed
and plan to do a little more accurate MV recording with it.
FWIW-I seem to have lost 220 fps on my supersonic loads going from my 16" AR down to my 10.5". Price you pay to save a little weight I suppose. The real question is do I want to have two subsonic loads....If I add powder to to stay around 1050 fps in the 10.5" I have a feeling those loads will be supersonic out of my 16" guns.
Ah well, tinkering is fun.