I can highly recommend a chronograph
It is a cheap tool for your experiments

fantastic video

The Police do NOT have a duty to protect the citizen
Now I don't think that most LEO would wuss out like the one in Bower Co. FL.
But it's a fact and I need to protect myself
The Gov. in Va. is defunding the police through the back door and nobody paying attention to it , so instead of LEO being minutes away they will be 1/2 hour away
So now I carry two extra mags

I Just read this morning about 16 senators are raising cane about this , they have sighed a petition to reverse the ATF 's  B/S

I powder coat a lot .380 To 10mm , rifles don't cast so use copper coated
I love the looks of a CLEAR coated SWC bullet in 10mm

I have to chase down my 10's also , my brass catcher got a girl friend and that's the last I saw of him