Got my new,old, speer 10 book. One really interesting load stood out. We all know the properties of Blue Dot and AA7. AA7 is listed as a slightly slower powder than Blue Dot and is one of the best powders for heavy loads for 9mm. The book states that the maximum loads do not exceed 35,700 cup which equal to our present day +p max. They list the following load:
125 gr JSP
8.8 max load of Blue Dot.
1.100 OAL
1233 fps out of a S&W 39/ 4" barrel.
Im at 8.8 of AA7 running 1163 average out of my Sig P228. My OAL is 1.158.
My Lyman 49th list the following load:
125gr JHP
7.1 max Blue Dot
1.075 OAL
1163 fps from 4" universal receiver
32,400 cup
Interesting stuff, just thought i would share. Any luck on that load data gng?