+1 on chrono
having a chrono makes things relative.
I can see what .2 change in powder does.
I can see what .025 longer coal does.
I can see also what is sub sonic but still makes the gun run as it should.
Maybe most importantly, it lets me know when I am approaching max loads.
with that data, I can now sit at home and make some good guesses if I want something different.
Evil cannot be reduced thru Legislation!