Got to chrono some rounds today. My .40 with 4.5 gr of N320 @ 1.135" averaged 163 PF. Just a touch low for major.
Any thoughts if I shorten them to 1.125" ? I had no pressure signs at all with my powder charge but I'm wondering if making them .010" shorter will give me just a bit more velocity. I know pressure will increase slightly too but I think they will be fine. Now if only I didn't have my lefty trigger flinch show up causing me to shoot my damn chrony rod ! Those Zero JHP jackets tear the shit out of a target when they blow apart !
Done that a couple times. I even grazed the chrono itself with 357 mag. Still works but there are some loose parts moving around inside...