I went to the range today to chronograph my loads and to do some IDPA practice. The groups were fairly tight considering I was practicing 2-2-2 drills and weak hand/strong hand. My practice distant was 10 yards (30 feet) and several of the groupings were touching and in or near the center. I used 2 different guns with basically the same results.
Weather - Sunny and clear, temperature in the low 50's and approx. 45-50 percent humidity.
Mixed cases
Federal small pistol primer
147 grain Montana Gold
3.4 grains of TG
1.145 OAL
.375 crimp
Chronograph results at 10 feet:
Gun 1 - Springfield XDm 4.5
Average velosity - 899.3fps
Extreme spread - 12.4fps
Standard deviation - 6.3
High- 904.6fps
Low - 892.2fps
132 pf (132,197.1 actual)
Gun 2 - Beretta Brigadier Elite II
Average velocity - 889.3fps
Extreme spread - 14.3fps
Standard deviation - 8.1
High - 898.7fps
Low - 884.4fps
130pf (130,727.1)
