Sig0431 Posted May 29, 2018 Share Posted May 29, 2018 Went out today to chrono some 180 gr black bullets. I had three sets loaded at 4.6, 4.4 and 4.2 with N320. Shot 10 rounds each and my PF was in the 260's - 270's for all strings. I find this hard to believe and wonder if my chrono has started to die. Link to comment Share on other sites More sharing options...
mach1soldier Posted May 29, 2018 Share Posted May 29, 2018 Yep no way in the world. Link to comment Share on other sites More sharing options...
RH45 Posted June 8, 2018 Share Posted June 8, 2018 I'd guess that it was sunny. I've found that the best time to chrono is when it's overcast. Link to comment Share on other sites More sharing options...
jhgtyre Posted June 12, 2018 Share Posted June 12, 2018 On 6/8/2018 at 4:30 PM, RH45 said: I'd guess that it was sunny. I've found that the best time to chrono is when it's overcast. In Arizona that can be a LONG wait! If your chrono has sky screens try to make sure that both the start and stop sensor are shaded, preferably an equal amount, by the sky screens. Having a tripod with a head that is adjustable for cant/tilt and rotation is really handy in this situation. You could also clip a cardboard target to the screens to get more shade but you do want some light transmission so it is better if you can get the screens to shade the sensors. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted June 12, 2018 Share Posted June 12, 2018 I'd start by changing the Everreadies … Link to comment Share on other sites More sharing options...
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