Re: Chronograph Results
Sometimes just ain't so easy, other times ES is just so low you wonder how it happened when everything has been so close to the same with other components etc. Really, the bitch about it is, there is numerous combinations with a cartridge and when one component is changed it can change the dynamic (it must) enough that the numbers get large.
Before I screw with checking ES, my barrel is good and fouled in with the load with 5-10 shots after cleaned so it's stable, trip down the bore each shot meets the same friction etc.
Change only one thing at a time and test a large sample.
Primer seat uniformed, right?
Primer seated consistant
Often getting them below 20 fps ES takes some serious persuit, sometimes though 10-15 just falls in your lap though.
I'm not familiar with the Pact chrono. I know one guy who had one who posted on AR that he went to an Oehler, but his was quite old and still wasn't sure Pact wouldn't fix it, he never did go to them and just went and bought the Oehler 35P. Really, I think he just wasn't too sure of the readings it was giving him, for some reason or another, not that it wasn't working, he just wasn't sure about it anymore was the way I understood him.
If you ever doubt your chrono, go to the range, ambush someone that has another good chrono [img]images/icons/grin.gif[/img] with them and ask to set yours up with theirs and shoot a string or two to check it out. This will at least tell you something usefull, one way or the other. ES over the two should be nearly identical if they both are functioning correctly.