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- Thread starter Jcooper
- Start date

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This might help you get started. You need to chrono your load before you can hope for decent calculator estimates.

Federal Premium - Downloadable Ballistics Application

Then you can plug the factory data (BC, MV) into JBM's constant drop calculator. It'll tell you what range each 2 MOA equals (instead of telling you what MOA each range equals).

JBM - Calculations - Trajectory μCard - Constant Drop

What I get doing it is:

Zero at 200

2MOA at 390

4MOA at 539

6MOA at 665

8MOA at 773

10MOA at 868

12MOA at 952

14MOA at 1028

16MOA at 1096

18MOA at 1159

20MOA at 1217

Federal Premium - Downloadable Ballistics Application

Then you can plug the factory data (BC, MV) into JBM's constant drop calculator. It'll tell you what range each 2 MOA equals (instead of telling you what MOA each range equals).

JBM - Calculations - Trajectory μCard - Constant Drop

What I get doing it is:

Zero at 200

2MOA at 390

4MOA at 539

6MOA at 665

8MOA at 773

10MOA at 868

12MOA at 952

14MOA at 1028

16MOA at 1096

18MOA at 1159

20MOA at 1217

Last edited:

I'm not sure what you are asking. Ihave a NF 5.5-22X50 w/NP-R2. The cross hatches are 2 MOA. Approximately 2" @ 100 yds, 4" @ 200 yds, 6" @ 300 yds, etc.

It's really very simple. You need a ballistic calc for your drops. The best option is to have it in the feild with you, but you can make a drop chart for youir rilfe and load. If you range your target @ 525 yds, go to the chart and check the MOA correction. If it says 3.6 MOA. hold the 4 MOA cross hatch slightly above your POA. You are better off dialing the correction in, but if you can interpolate the MOA markings that will work too.

Mark

If it says 3.6 MOA. hold the 4 MOA cross hatch slightlyaboveyour POA.

I need to make a correction. That should read "...slightly

However, as they said you need to know the MV so got to chrono the load.

BH