More Chronograph Results

Today I got some more use out of my Garmin Xero C1 chronograph. It's so easy to use I may as well chronograph all the things.

All data is for 10 shot strings. Muzzle velocity (MV) is in feet per second, with muzzle energy (ME) is in foot-pounds. The ambient temp was about 94*F and elevation above sea level is about 160 feet.

First up was a selection of 9mm from a Glock 34 with 5.3" barrel:

Wolf Polyformance 9mm 115 grain FMJ:

• MV: 1154.5 
• ME: 340.3

This ran about 60 FPS faster than when I shot it in my CZ P07 with a 4.36" barrel.

Sellier & Bellot 124 grain FMJ:

• MV: 1175.7
• ME: 380.61

Winchester M1152 115 grain FMJ-FP:

• MV: 1358.3
• ME: 471.05

M1152 is the relatively new US military standard issue 9mm Ball. As expected it was a lot hotter than the Wolf and S&B range ammo. I'll have to run some of this through a carbine to see how fast it goes from a 16" barrel.

Next up was some .38 Special, with a Lee TL358-158 SWC on top of 3.8 grains of HP-38. I fired these from a S&W Model 15-3 with a 4" barrel.

• MV: 743.1 
• ME: 193.8

This is a nice plinking and target load that's pleasant shooting in a K-Frame with Magnas and a grip adapter.

Finally, I ran some black powder .44-40s over the Garmin. These were shot in my Cimarron Model P (Colt Frontier Six Shooter replica) which has a 5.5" barrel. Both loads used a 219 grain bullet cast in an Accurate Molds 43-215C mold.

First up was a .44 Henry-equivalent load with 1.9cc (~30 grains) of pre-factory explosion Goex 3Fg, sparked by Federal No.150 large pistol primers.

• MV: 833
• ME: 337.68

Not bad, and not too far behind .45 ACP Ball.

Finally were some loaded with 2.2cc (~35 grains) of Scheutzen 3Fg, sparked with CCI large pistol primers.

• MV: 756.1
• ME: 278.27

I am very surprised at how much slower the Scheutzen loads ran. I was under the impression that it's at least as energetic as Goex, but that didn't seem to be the case with this batch.

I plan to load up some more of each of these loads but with the same primer to remove a variable, but I doubt that the results will be much different. I also need to chronograph some loads with Swiss 3Fg, of which I have a limited supply, along with a pound of some 1990s-vintage Elephant 3Fg. I'm expecting higher velocities with the Swiss and lower velocities with Elephant.