Not tech minded so bit of help please ,decided to try and put the data in scope itself not via the app.Put it on 22 rimmy, bang on 50yds up to 90yds on red crosshair then tried 100yds 11/2 inches high ,was hoping to get it spot on to 120 yds ,where have I gone wrong any ideas
Dnt ballistic help
- Thread starter bobby18
- Start date
It's actually pretty easy to put the data in via the app. Pick your ammo from the drop down list and is does most of it for you. You need to make sure you get the scope height correct (centre of barrel to centre of scope). You can generally ignore bullet length. To be 100% true you really need to chronograph the velocity but I got away with using the velocity from the ammo box.
Quarrybank
Well-Known Member
Bit surprised you are seeing such a difference between 90 and 100 yds. But I had something similar with Zulus on 22 where the rifle was shooting higher than the ballistic calc thinks. Sorted it my increasing the coefficient. I also just stick info direct to scope rather than using App.
How much did you adjust the bc at a time
Quarrybank
Well-Known Member
Sorry not sure I remember exactly but I just did it by trial and error. There were write ups on here a year and more ago by well known member Mealiejimmy who was an expert in these things, sadly passed away now. He suggested that for this type of issue with a 22 optimising the BC was more effective than velocity changes. Presumably if velocity is in the right ballpark. Try searching for those.
Great thanks
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