I did a bit of data collection this afternoon.
Lee TC lead bullet. 180 grains.
Speer once shot brass
Winchester primer.
IMR 800X 6.5grains
Lee Load master press.
All depriming and repriming is done on a single stage press. I want to inspect every primed brass before I load it.
Here are the velocities:
Kahr PM40
Low 845
High 905
Average 886
Extreme Spread 60
Standard Deviation 25
Glock 27
Low 885
High 924
Avg 899
ES 39
SD 17
Hi Point 40 carbine
Low 1161
High 1236
Avg 1201
ES 74
SD 30
Note that the 16" barrel is good for 300fps over the 3-3.5" barrels in the pistols.
My tests were over 5 rounds in each gun. The ES and SD are not that valuable, except to say that I think they are all good for being being produced in my shop without weighing charges just measured by volume.
All my 40s cycle this round well.
“If someone has a gun and is trying to kill you, it would be reasonable to shoot back with your own gun.”
― Dalai Lama XIV (as told to high school students.)