Zero Height, Zero Offset

[JCCinOhio]

I understand what zero height/offset are for.. But, say my rifle is sighted in for 175gr bullets to hit zero, and if I shoot a 165gr it goes say 2" left and 3" high of aim point at zero distance (100yds), can I plug this in and get windage/elevation for longer distances based on these offsets?

So I'd put -2 for offset, and 3 for height.. and when the ballistic app is figuring my windage/elevation for say 500yds it will take that into account and add the appropriate extra clicks? (assume all other inputs are made for the 165gr bullet as well, MV, BC, etc)

And if that's so.. then I'd be able to have numerous bullet profiles, all I'd have to do is log the offsets and I wouldn't have to change my zero for each flavor of ammo?

 

[JCCinOhio]

Had time to do some more digging and found out the above works... http://www.accuracy-tech.com/zero-height-zero-offset-why-theyre-important/

 

[Gunfighter14e2]

The other way is to shoot the load to distance an record it, based upon you std load zero. Electronics fail, proper data cards/books are forever.

 

[Deleted member 10043]

Yes, I use it the same way. The app incorporates the offsets for all calls. You should see these offsets with app set at zero and subsequent distance further down range.

 

[Sig Marine]

.. then I'd be able to have numerous bullet profiles, all I'd have to do is log the offsets and I wouldn't have to change my zero for each flavor of ammo?

Correct. When you fill in each of your bullet's parameters, include the offsets for each. One thing to remember though, if your turrets are floated to zero for one particular round at 100 yards and you use offsets for others, the bullets with offsets will require elevation and windage for shooting 100 yards, i.e. your turrets will not be on zero for these particular bullets when shooting 100 yards.

 

[BallisticSam]

Wouldn't think you could just add in an Offset and be "on" at distance for a bullet that has a different weight, velocity, and BC. I use the BallisticsArc program and the only time I thought about using this option would be for running my rifle with and without a suppressor for the same load. But then why would I ever shoot without my suppressor? But then I would also think that the Offset would be for say a scope zero'd with 140gr bullets "6.5cm", turrets set to zero, then I open app choose the 123gr bullet data for a coyote hunt this weekend "loaded as another rifle, and in that format use the offset function. Say 123s are high 2" and right .5.....the 123gr data is where you would want the offset to go not the 140gr...then the charts and long distance data would mach up with the bullet and you can keep the same zero on the scope without having to reset the turrets...........this makes sense in my head........

 

[BallisticSam]

Correct. When you fill in each of your bullet's parameters, include the offsets for each. One thing to remember though, if your turrets are floated to zero for one particular round at 100 yards and you use offsets for others, the bullets with offsets will require elevation and windage for shooting 100 yards, i.e. your turrets will not be on zero for these particular bullets when shooting 100 yards.

Yes this......the Elevation and Windage will have to change didn't think of that. Still wish we could keep the turrets On Zero and have the right tracking for that bullet.