Zero question

[lilred06]

I’ll keep it short and quick...I have an optic that requires a 100 yard zero, but won’t have access to a 100+ yard range for a little while. Best I’ve got is 25 right now, anyone know the hold for getting close to a 100z at 25 yards? I’ve tried to research it but finding about 6 different answers. I know it won’t be a true 100 yard zero, but at least close until I can confirm. Thanks dudes

20” barrel shooting standard 55gr .223.

 

[WinstonSmith]

Strelok is a great ballistics app. Should be able to tell you exactly what you need when enter in your specifics.

 

[coach482]

https://blog.cheaperthandirt.com/rifle-sighting-100-yards-25-yards/

https://www.signnow.com/fill-and-sign-pdf-form/37622-aimpoint-25-yard-zero-target-for-100-yard-zero

https://www.amazon.com/Chrs-Sajnog-Sight-Targets-100-Yard/dp/B075ZLJ3K6

 

[jeep78]

https://jerkingthetrigger.com/2015/02/13/zeroing-target-50200-yard-zero-at-10-yards/


The 50/200 works well at 10 yds.

 

[300_whisper]

I used 55 grain American Eagle FMJ going 3240 FPS. You need to sight in .8 inch low at 25 to have a 100 yard zero.

 

[lilred06]

I used 55 grain American Eagle FMJ going 3240 FPS. You need to sight in .8 inch low at 25 to have a 100 yard zero.

View attachment 3375192

Awesome! Thanks! That’ll get it close enough until I can get somewhere to really dial it in.

 

[bowhtr1]

Make sure to get your sight height right. This will be critical to be on paper at 100 later.

Sent from my SM-G991U using Tapatalk

 

[Jambo]

Measure the distance from the sight height to the center of the bore. (Sight height over bore).
Multiply that by 0.75.
Sight in the rifle so the point of impact is this distance lower than point of aim.

That should give very close to "spot on" at 100 yards.

As noted previously by bowhtr1, for AR's or scoped rifles the sight offset can be significant.

 

[Whetstone]

There is a 100 yards indoor range at a relatively close drive from you, georgia gun club, i think it’s buford, look it up.

 

[GAgunLAWbooklet]

ditto to what bwhntr said earlier.

Measure the distance from the center of your optic
to the center of the bore of your barrel underneath it.

You'll have to enter this measurement in the computer or app
to run the numbers and get both a 100 yard zero and a 25 yard "bullet below crosshairs by X.Y inches" figure.