roval
Member
I tested my first 9 mm reloads yesterday. chrono beta master
5.7 unique cci primer/ federal brass /speer 115 tmj
lo 1266 fps
hi 1324
av 1302
extreme spread 57.5
standard dev 18.78
6 unique cci primer/federal brass/ speer 115
lo 1330
hi1367
av 1343
es 37.12
sd 14
6 unique cci primer/federal brass/ Remington 115 fmj bulk
lo 1321
hi 1374
av 1348
es 53.15
sd 17.86
for comparison I chronoed 10 rounds of Winchester 115 fmj white box
lo 1154
hi 1281
av 1212.4
es 127
sd 40.93 (manually computed after looking up the formula in the internet but I double checked it -my chrono can only store 6 strings)
While I am very happy with the consistency and low spreads and sd's(especially compared to my 230 grain 45 acp reloads with bigger sd proportionally), in my speers manual the velocity with 5.6 unique was 1166 fps and 6.3 grains with 1244 fps. Do you stick with the load or go to lowest recommended(5.6 grains) or even lower than recommended.
Accuracy wise I think it's more me and the gun at 25 yards. I hit my 25 yard gong more consistenly with my 45 acp with the bigger spreads of velocitites than with my 9 mm but still good .
5.7 unique cci primer/ federal brass /speer 115 tmj
lo 1266 fps
hi 1324
av 1302
extreme spread 57.5
standard dev 18.78
6 unique cci primer/federal brass/ speer 115
lo 1330
hi1367
av 1343
es 37.12
sd 14
6 unique cci primer/federal brass/ Remington 115 fmj bulk
lo 1321
hi 1374
av 1348
es 53.15
sd 17.86
for comparison I chronoed 10 rounds of Winchester 115 fmj white box
lo 1154
hi 1281
av 1212.4
es 127
sd 40.93 (manually computed after looking up the formula in the internet but I double checked it -my chrono can only store 6 strings)
While I am very happy with the consistency and low spreads and sd's(especially compared to my 230 grain 45 acp reloads with bigger sd proportionally), in my speers manual the velocity with 5.6 unique was 1166 fps and 6.3 grains with 1244 fps. Do you stick with the load or go to lowest recommended(5.6 grains) or even lower than recommended.
Accuracy wise I think it's more me and the gun at 25 yards. I hit my 25 yard gong more consistenly with my 45 acp with the bigger spreads of velocitites than with my 9 mm but still good .