MightyMO1911
New member
Hi all. Been a while since I've posted, or even stopped by for that matter, but life has been pretty busy here for a while. But hey, not the point of this thread. Several months ago I loaded some 9mm using BE-86 powder and a 115 gr Nosler JHP. Today, finally, we had a nice day here weather wise and I was able to get outdoors and test these loads. This is the first test I've done with the BE-86 powder, so lots to learn. I found this interesting. I started at 5.8 grains and worked up to 6.2 grains. COAL is 1.140", and used a Remington #1 1/2 primer.
5.8 grains: 1092, 1118, 1087, 1071, 1073, 1134, 1076, 1097 and 1067.
AVG: 1090 E.S. 67 S.D. 21
5.9 grains: 1165, 1112, 1157, 1120, 1137, 1100, 1090, 1100, 1095, 1099
AVG: 1117 E.S. 75 S.D. 26
6.0 grains: 1128, 1162, 1128, 1141, 1150, 1163, 1144, 1092, 1097
AVG: 1133 E.S. 71 S.D. 25
6.1 grains: 1175, 1175, 1143, 1128, 1132, 1179, 1179, 1172, 1168, 1123
AVG: 1157 E.S. 56 S.D. 23
6.2 grains: 1149, 1141, 1184, 1151, 1151, 1162, 1209, 1169
AVG: 1164 E.S. 68 S.D. 22
As you can see, one round only 9 shots registered and one only 8 shots registered, so maybe these aren't exactly complete. But I noticed a couple of things. Really, the extreme spread and standard deviations don't really change by much, even though the velocity increased steadily. But, that steady increase slowed between 6.1 and 6.2 grains. That increment was only 7 fps, but again, on the 6.2 grain test, only 8 rounds registered on my chrono. So it's possible that number may have been a tick higher had I got all 10 shots.
So I was thinking about the possibilities of why the increase form 6.1 to 6.2 was smaller than the others. I come up with 2 potential causes, feel free to add any more. 1. An impending pressure spike or 2. Maybe that's the max powder that my short 3" barrel can burn. (M&P Shield).
Anyway, I just thought this was interesting.
5.8 grains: 1092, 1118, 1087, 1071, 1073, 1134, 1076, 1097 and 1067.
AVG: 1090 E.S. 67 S.D. 21
5.9 grains: 1165, 1112, 1157, 1120, 1137, 1100, 1090, 1100, 1095, 1099
AVG: 1117 E.S. 75 S.D. 26
6.0 grains: 1128, 1162, 1128, 1141, 1150, 1163, 1144, 1092, 1097
AVG: 1133 E.S. 71 S.D. 25
6.1 grains: 1175, 1175, 1143, 1128, 1132, 1179, 1179, 1172, 1168, 1123
AVG: 1157 E.S. 56 S.D. 23
6.2 grains: 1149, 1141, 1184, 1151, 1151, 1162, 1209, 1169
AVG: 1164 E.S. 68 S.D. 22
As you can see, one round only 9 shots registered and one only 8 shots registered, so maybe these aren't exactly complete. But I noticed a couple of things. Really, the extreme spread and standard deviations don't really change by much, even though the velocity increased steadily. But, that steady increase slowed between 6.1 and 6.2 grains. That increment was only 7 fps, but again, on the 6.2 grain test, only 8 rounds registered on my chrono. So it's possible that number may have been a tick higher had I got all 10 shots.
So I was thinking about the possibilities of why the increase form 6.1 to 6.2 was smaller than the others. I come up with 2 potential causes, feel free to add any more. 1. An impending pressure spike or 2. Maybe that's the max powder that my short 3" barrel can burn. (M&P Shield).
Anyway, I just thought this was interesting.