Chrono problems and load data

[JCB]

Hi

I was trying to do some chrono today before a match this coming weekend.

Well, I have a ShootinChrony Beta Master with the IR lights.

With fabric ammo, it looked to get everything right, also some other peoples reloaded.

But a lot of us got strange data out of it.

I had made some .40 from 5.0gr to 5.4gr VV N320 pouder and 180gr Berrys bullets. AOL 1.18" to 1.29" (30mm to 33mm)

With different comboes I got readings from 300fps to 500fps

Back to fabric, 1000+ readings like normal, depending on ammo.

Any thoughts why?

Also, running about AOL 1.18" 180gr bullet, how much VV N320 pouder for nice match ammo in major?

I see a lot of people use 5.3gr but for a litte longer AOL... just how much should I go down because of shorter ammo?

Any thoughts and ideads?

Best reagards

Jostein

[olp73]

Also, running about AOL 1.18" 180gr bullet, how much VV N320 pouder for nice match ammo in major?

I see a lot of people use 5.3gr but for a litte longer AOL... just how much should I go down because of shorter ammo?

I use 5,2 coal 1,18" 180gr. plated, makes major in my gun.

Edited November 12, 2010 by olp73