Thread: Which Chronograph?

Originally Posted by Moa Hunter

See if you can hire a Chrony. There was / is a forum one somewhere ???. Hire one and see how it goes and if you can, get to the range really early - before any mirage or wind and that will help groups regardless of a chrony

I think someone is using it still from the thread with people waiting in line.

Buy a 2nd hand Chrony and build it into a light box so that you don't have problems with variable atmospheric effects (cloud/sunshine/etc.).

Originally Posted by rupert

Buy a 2nd hand Chrony and build it into a light box so that you don't have problems with variable atmospheric effects (cloud/sunshine/etc.).

Excuse my ignorance but what is a 'light box' for a chrony ??

Originally Posted by Moa Hunter

Excuse my ignorance but what is a 'light box' for a chrony ??

I would assume it would be a box made out or corflute or similar to shield the chrono from direct sunlight

dannyb is correct - a box made of light-weight materials which shields the Chrony from variable ight and has fixed lights over the sensors (battery driven LED's are very cheap) so that the environment for the Chrony to operate in is constant, and the results are consistent.

Originally Posted by rupert

dannyb is correct - a box made of light-weight materials which shields the Chrony from variable ight and has fixed lights over the sensors (battery driven LED's are very cheap) so that the environment for the Chrony to operate in is constant, and the results are consistent.

Never thought about it before but I guess that a Chrony would work inside a building with artificial lighting, which is what a light box is duplicating ?

Greetings All,
My son chronographed his rubber band gun using a early chrony I had borrowed and a couple of incandescent lamps back in the eighties. He did it at night and got a reading of 142 feet per second from memory. Clearly not much danger area was required. You used to be able to get light fixtures that clipped to the sky screens for the purpose, possibly still can.
Regards Grandpamac.

Originally Posted by 308mate

Cheers for all the info guys. As the place where I shoot is over an hour from where I live it will be a bit of a pain turning up and finding I can't use the Chrony due to the sun etc.

So I am leaning towards the Magnetospeed or Labradar, may just have to sell a couple of things.

Does the magnetospeed.com site ship to nz?

Are there ever sales on the Labradar? Eg Sika Show etc?

Seems like it is pretty pricey - $1300 for the base unit, plus 200 for the case and 200 for the stand...$1700!

Fuck prices have gone through the roof. Used to be about a grand. Don't buy the stand just use a tripod. The case however is nice. I got mine in Canada ended up a bit under a grand here with case and archery trigger. They don't go on sale here but the labrador website does ship to NZ and has. Pretty good black friday sales (15-20%). If you go magneto just accept that you won't be able to check velocity until development is done. That's why I sold mine. I do care about velocity and accuracy so not being able to do them ant the same time cost me time and extra reloading components. Sold it quite quickly.