Thread: Whats the bees knees? Chrony

Originally Posted by andyanimal31

The reality is a chrony only gives you enough information to get started.
All other data should be collected by verification shooting.
Look at the vortex optics website and watch their verification videos as it will get you on the right track

This, even F1 chronys have gotten me close enough and then just shoot a few varying ranges to match and adjust your ballistic software to suit. Variations in the weather, altitude etc have enough effect as it is.

Or are you after something else?

Originally Posted by Nibblet

This, even F1 chronys have gotten me close enough and then just shoot a few varying ranges to match and adjust your ballistic software to suit. Variations in the weather, altitude etc have enough effect as it is.

Or are you after something else?

Dont know? Just got into it so want to get a good one now rather than a dud

How do you verify it?

Originally Posted by Toby

How do you verify it?

By hitting the target after adjusting according to drop chart I would imagine

How do you get a speed from shooting the paper?

The size of the hole

Originally Posted by Toby

How do you get a speed from shooting the paper?

Google JBM you will work it out

the local nra full bore range has electronic targets now. it gives the speed at the target, say 600 yards away.
just saying, I thought it was pretty cool.

Yup bully, have a look at Silver Mountain targets, those are the ones we use.

Not cheap, but awesome to get terminal velocity at longer ranges.

yeah, the same ones then.

Originally Posted by andyanimal31

The reality is a chrony only gives you enough information to get started.
All other data should be collected by verification shooting.
Look at the vortex optics website and watch their verification videos as it will get you on the right track

Best advice on the forum for a while Andy, particularly for those starting out.

Originally Posted by veitnamcam

you"may" have to shoot for speeds and groups separately with a weight hanging on the end of the barrel for speed readings.

Not really, the 2 groups (top group 4 shots, bottom group 2 shots) were shot with the MagnetoSpeed attached. Generally accepted that the bullet will move away from the sensor and is in most cases the sensor is at 6 o'clock the elevation will be affected. The sensor would be just as happy mounted 3 or 9 o'clock and 12 for that matter (shooter may not be happy).

May affect thinner barrels perhaps. The thinnest I have used it on was my CZ Varmint 223 and accuracy was vg and no different to the groups I get without the sensor mounted.

I have found some scorching on the sensor arm but not on the sensors themselves. The scorching is cosmetic only and no biggie unless you get anal about such things.

I did say "may"
I was thinking specifically of pencil thin long magnum barrels like the new Kimbers and rems where it "may" affect the way the barrel whips as its fired.

Originally Posted by veitnamcam

I did say "may"
I was thinking specifically of pencil thin long magnum barrels like the new Kimbers and rems where it "may" affect the way the barrel whips as its fired.

And I didn't entirely disagree with you if you read my post. I was posting my experiences with the device to date

The Magneto speed is much easier to use and unaffected by wind and weather, altogether a much more practical choice than any of the ones with screens. I wouldn't go back to screens again, and, as has been pointed out, it's only a good starting point so not much point putting too much money into it. My 2cents worth ;-)