Again, these are all Starline 357 brass, Federal SP primer, 158 gr LSWC from Dardascastbullets.com, powder and charge below. And it was pretty cold this weekend, the temp was around 32-33F when these were taken. Its funny, I also shot some 45 Auto Rim, same charge/gun, and it was running 15 fps less than a month ago when it was around 55 or 60F outside. So temperature matters a bit.
So here is the data. All fired from 686 4" revolver:
5.0 gr Bullseye
High: 975.8
Low: 913.1
E.S.: 62.7
Ave.: 938.5
S.D.: 13
95%: 2.6
5.2 gr Bullseye
High: 1019
Low: 925.7
E.S.: 93.3
Ave.: 968.1
S.D.: 21.6
95%: 4.7
11.4 gr 2400
High: 1121
Low: 1007
E.S.: 114
Ave.: 1068.5
S.D.: 28.1
95%: 8.4
11.8 gr 2400
High: 1138
Low: 976
E.S.: 162
Ave.: 1075
S.D.: 35.3
95%: 10.6
12.2 gr 2400
High: 1149
Low: 1015
E.S.: 134
Ave.: 1099.3
S.D.: 30.3
95%: 9.4
12.4 gr 2400
High: 1154
Low: 1044
E.S.: 110
Ave.: 1108.5
S.D.: 28.6
95%: 8.6
I know the numbers are a bit low because of the cold. Do they look ok otherwise? Bullseye 0.2 grain changes it by 30 fps, but 0.4 gr 2400 moves the average about 10 or so. Is this right? And would that last load be considered too hot, or a medium 357 mag which I could shoot out of a 686 no problem forever?