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Have any of you folks ever checked the accuracy of your chronies, and if so, how? I've got a shooting chrony, good, or bad? The only way I ever checked mine was to shoot some top rated shotgun ammo with published velocities printed on the box. Of those I'm usually within +/- 20fps.
That said, rifle velocities can be off, usually lower, buy up to 200fps with some powders and very close to published data with others. With shotguns, my velocities can be off up to 150fps, higher or lower, with published data followed exactly.
I loaded some hevi-shot loads per Alliant data and was running at 1420fps vs. their 1367fps, so I gave them a call. After the usuall 3rd. degree, he snickered at my $90 chrony vs. his mega zero $ laboratory housed chronograph. After all that, he said "shoot em, but they are shooting at 1367fps".
So, what are your thoughts?
That said, rifle velocities can be off, usually lower, buy up to 200fps with some powders and very close to published data with others. With shotguns, my velocities can be off up to 150fps, higher or lower, with published data followed exactly.
I loaded some hevi-shot loads per Alliant data and was running at 1420fps vs. their 1367fps, so I gave them a call. After the usuall 3rd. degree, he snickered at my $90 chrony vs. his mega zero $ laboratory housed chronograph. After all that, he said "shoot em, but they are shooting at 1367fps".
So, what are your thoughts?