X2 brotherWorthless to me as it wont read anything over 4K
Sounds like you need the weight on the end of the barrel to tune it.I do what Richcotte does; problem is, my crony backup never works right, so I have a magneto speed for pressure strings, and then abandon it for working up a load with groups. It would be really nice if I had a reliable working chronograph the entire time. I wan't excited about spending $600 on a Lab radar, and they weren't available anyways when I bought the magneto, but now I wish I had the Lab radar. The crazy thing is, I will work up a pressure string with the magneto speed with 5 rounds of 1 gr. powder increment each and it will go into a 1" group, and then I'll pick a powder volume, load up 3, and they'll group worse than the previous spread with the magneto on. Maybe I need to hunt with a magneto speed hanging off the end of my barrel!
Do you remember the Oehler 33? I bought it in 1979. In 1991 it went in for repair. Working ever since. In fact this very morning I fired six groups starting with 99.5 grains and dropping to 97.0 grains. Each group used 1/2 grain less than the previous load. The velocities ran from 4,330 feet per second down to 4,180 fps. It obviously still works.
Have you ever stared ar your brother in disbelief after he shot an arrow into your brand new Prochrono? Had only registered two arrows and bang flop.BTW, have you ever chronographed a chronograph going downrange after being hit square in read out face with 12ga 1 1/4oz slug at 1450fps? Impressive how fast it disintegrated heading downrange. I called Pro Chronograph to order new one and lady said maybe we can repair it until I told her destroyed with slug. She still might be lausing