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What is going on?
5mmgunguy
Member Posts: 3,853
I went to the range yesterday. Took some new handloads. First shot across the chrono was 2653 fps the next two were 3057 fps and 3027 fps. Ok first shot was the fouler and 300 fps slower. Maybe. Shot three more same thing. First shout was 2853 fps the second and third were 3000fps, How?
Comments
Two things come to mind that can cause eratic vel. readings.
1) shooting too close to the screens so the muzzle blast is causing interference.
2) inconsistant ignition -, sometimes caused by using standard primers with some ball powders, or with compressed loads.
We are kinda' stab'en in the dark without knowing;
caliber
load recipe
spec's for the gun used (barrel length, twist, etc)
The more specific your question, the more likely you are to get the correct answer in a timely manner.
Jim