Author Topic: Ballistics Calculator  (Read 1959 times)

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Offline Lastcat

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Ballistics Calculator
« on: July 08, 2018, 10:08:46 PM »
Anyone use Hawke Chairgun?

https://us.hawkeoptics.com/chairgun.html

When I was shooting 50 and 100 yard distance, using my Hatsan Bullboss .25 Air Rifle, we had competition to see how accurate we could get with our groups at our Forum. It was lots of fun, cheap and quite. We used Chairgun to dial in our scopes for longer distance that matched our pellets.



I still use Chairgun to zero in my scope for my Czechmate. To run Chairgun you at least need a Chrono. Then plug in the:

Bullet Weight
Bullet Coefficient (for 9mm FMJ about .110)
Muzzle Velocity
Zero Range (distance you zero your dot/crosshairs)
Sight Height (Scope dot/crosshair to Bore Center)

For my Czechmate in 9mm Major its:

115gr
.102
1480
30 yards
2.00

Results below:



I have my Cmore zeroed at 30 yards. At 10 yards it just over 1" low. 22 to 73 yards plus/minus 1/2".

Field testing this 30 yard zero, really worked great. Just a slight drop (1") at 8 yards and flat out to 75 yards. Hope this helps.
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