Subsonic 9mm Load Results
I got a chance to take those initial 9mm rounds out to the range and I have to admit that it was a lot of fun! I only had 50 rounds; but, it was one of those times where I left with a smile on my face.
The initial testing was done with a 5" M&P and an XD(m) 3.8 with a Storm Lake threaded barrel. An AAC Ti-RANT 9 suppressor was also used with a sound level meter to get some suppressed results.
Having said all that, here are the results:
M&P 9 Velocities
- Min = 862 fps
- Max = 886 fps
- Avg = 874 fps
M&P 9 Sound Levels (Unsuppressed)
- Min = 161.1 dB
- Max = 164.7 dB
- Avg = 162.42 dB
XD(m) 3.8 Velocities
- Min Unsuppressed = 844 fps
- Max Unsuppressed = 885 fps
- Avg Unsuppressed = 861 fps
- Min Suppressed= 861 fps
- Max Suppressed = 916 fps
- Avg Suppressed = 892 fps
XD(m) 3.8 Sound Levels (Unsupressed)
- Min = 162.2 dB
- Max = 163.4 dB
- Avg = 162.81 dB
XD(m) 3.8 Sound Levels (Suppressed using Ti-RANT 9)
- Min = 123.8 dB
- Max = 128.6 dB
- Avg = 126.09 dB
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