Tuning Zeroing

[Larry1956]

So after tuning Black Betty(30 cal Maverick Compact), shooting the JSB 44.75 @ 880fps, I zeroed her at 50yds. Set my hard stop to zero at 50. Now when I shoot @ 10, 20, 30, 40, 50, 60 I have negative moa between about 25 to 45 yds which I have to hold under for as the pellet goes above the line of sight of the scope. Graphing this out shows a steep rise from the muzzle till it peaks at 30yds. Any thoughts on the way I have her zeroed?

 

[ram2jeep]

If you use StrelokPro or ChairGun you can figure your best zero point as to not have a negative click values. I tend to zero at 30 to 35 yards as you don't have a negative and can use a hard stop.

The third column shows click values and that's what your main concern is with the zero stop. I hope this helps and gives you some guidance/help.

 

[Sqwirl57]

I have my Dreamline zeroed the exact same way. I know where my near zero and peak elevation are and just hold under accordingly. I also don't have my zero stop set for my 50 yard zero. I have it set for 1.5 mil under my zero so that I can dial down when needed.

 

[Sqwirl57]

The other option is to reduce height over bore, which really can't be done very well on the Maverick and Impact.

 

[elh0102]

I have begun setting my zero for POA=POI at the highest point of trajectory. In that way, there is never a high POI, so no hold under, always hold over, on either side of dead on hold. I find hold under counterintuitive, just my preference.

 

[Vrodfast]

I zero my m3 @ 50 yards just like you. I’m usually shooting 75 to 125 yards and hold under for shorter distances. I use StrelokPro and my Apple Watch to quickly get it dialed in or use the holdover in the reticle. 

 

[gendoc]

I have begun setting my zero for POA=POI at the highest point of trajectory. In that way, there is never a high POI, so no hold under, always hold over, on either side of dead on hold. I find hold under counterintuitive, just my preference.

same here 

 

[Who_needs_powder]

I have begun setting my zero for POA=POI at the highest point of trajectory. In that way, there is never a high POI, so no hold under, always hold over, on either side of dead on hold. I find hold under counterintuitive, just my preference.

I like that. So, elh0102 or gendoc, this may sound like a stupid question but how does one go about finding the highest point of trajectory (without a bunch of shooting at various distances, trial and error, etc...)? Is there some simple method?

Sorry Larry I don't mean to hijack your thread! I hope you find this useful too.

 

[gendoc]

a bunch of shooting at various distances is the way i do it with all my airguns. yes it takes time but i enjoy it because my hunting will be fortified !!

 

[dizzums]

yeah .. if you want the longest 'point blank' (where what you put the crosshairs on gets killed) killzone it has to be zeroed at the perfect place .. you input your parameters into a ballistics software like chairgun and figure it out according to what your acceptable deviation (up and down generally) is ... your zero point is usually alot closer than you would think at typical airgun velocities .. usually between 15 and 22 or so yards but it needs to be exact to work the best ... and that typically gives an average 'point blank' with most airguns of about 12-46 yards i would say, outside of that you compensate, and you can see in the software what it will be at say 60, hold over 3" and so on ..

 

[elh0102]

I shoot at 5 yard intervals. If POI is high,then I click down to make it the new zero distance, repeat out to my maximum range, until no more high POI. Then go back and note the holdover for each distance. Since I rarely shoot beyond 45-50 yards, 5 yard increments work for me. If you shoot longer range, a couple of yards can make a difference in a small target, so I guess you would want to take test shots at smaller intervals.

 

[corny]

StrelokPro will give u the longest point blank shot if it Calc it for scope tape.

like right now on my scope take, 15y and 65y are one click apart. mrad 

 

[18.13]

Chairgun has a option for optimum zero in the toolbox will give you the longest point blank with no hold unders

 

[Corvid_hunter]

My usual shots with air rifle are around 30 yards so I zero for that. Rimfire I zero at 50 yards and centerfire at 100.