chronograph going bad?

FEENIX said:

I have three chronographs, and I can do the same. I have the original LabRadar and F1 Chrony (I have not played with my Velociradar yet). If you want, I can coordinate with @akdad and send them your way.

I hope it is only a battery issue (I have been there before) and not a load issue gone bad.

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hydehunter said:

I have been using an old school red box Chrony chronograph for about 20-25 years and have been happy with it for what I need, but yesterday I was testing some loads for an up coming trip to Africa and was using my 458 win mag and last summer the loads I settled on was 80 gr of AA2230 Fed 215 primer and 420 gr CEB Raptor bullet. now this load kicks them out at 2424 fps when done last. but now same lot of powder, primers, and bullets I am getting velocity of 2316 108 fps slower. temp yesterday was 18 degrees. I don't mess with the chronograph at these cold temps but we will have very cold and snow very soon and I will not be able to do load work then. any one have any thoughts on why my velocity dropped so much. weird 15 min ago it was very sunny and 19 degrees and now fog has moved in and everything is getting iced over. thank for your thoughts

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