Usable Ballistic Program Results for Field Target

[mtm100]

Good Morning,

I'm wondering if anyone is getting usable results from any Ballistics program to set up a FT scope wheel?

I've been using these programs on and off for years now. The only one I got usable results from was the old
Hawke Chair Gun Pro for Hawke scopes.

I'm now shooting a Sightron SIII scope. I've tried a couple of the Hawke programs as well as Strelok with poor results.
Chairgun Elite seems to be the only program that lists a reticle for the SIII. I have played with that program for many hours.
But can't get results close to my real holdovers. I have a very accurate scope height measurement as well as several measured BC inputs
at different speed/ranges. My SIII has the SIII FTIRMOA_H reticle. For example my real world holdover for 10 yards is about 4 MOA.
Chairgun Elite says its 7.1 MOA. I have to be doing something wrong but for the life of me can't figure it out.
Any help would be greatly appreciated.

Thank You,
Mark

 

[Motorhead]

Looking to CLICK or use Holdover ?

 

[mtm100]

Looking to CLICK or use Holdover ?

Holdovers for Hunter FT

 

[Bramezy]

I used Chairgun Elite recently and was very surprised how accurate it was based on just a few yardages actually shot. Once I entered all my data I had to keep editing the scope height to get it to line up and it lined up perfectly. Pretty neat. Then I used my actual reticle to see a few different targets at different ranges, also pretty neat. Maybe you have some other data off to be that far off in adjustments. Mine was very close with all original data so just a small twek to get it lined up.
Setup was a Riton Scope, and Wolverine 177 at 900fps 10.3 JSB.

 

[Motorhead]

Holdovers for Hunter FT

If going into HUNTER class and utilizing HOLDOVER .... you honestly will be a lot happier with a MIL subtension scaled reticle.
Your hold points as viewed will be a easier to do fractional holds between full and half marks.

IMO one of the better scopes made today for american HFT class application is the ATHLON HERAS SPR SFP in Mil ( 6-24x56 )
The mil reticle subtension is already at 16X and has .2 mil scaling hashes between full mil markings.

Chair gun pro absolutely works using the generic Mil-Dot setting with Calibrated and Viewed X power BOTH set to 16x

AS WITH ALL PROGRAMS ...
Scope height is critical to get right.
Pellet weight and speed too
* Errors in actual POA to POI corrected via BC fine tuning so that .... Actual POI charts to the programs stated hold/s.
Do that your GOLDEN !!!

Zero range at programs determined single zero distance !!!!

Adjust scope to determined ZERO and sight in there .... Shoot your 10 yard next, then your 50 or 55 yard distance. using the programs holds, if a bit off ( generally the far and not close ) adjust BC within program to read what POI is actually doing.
All the ranges in between will fall into place once these 3 distances are shot and match the program .... Print your DOPE data and go shooting !!!

 

[drsquall]

I use chair gun for air rifles and 22 LR. Put in good data good environmentals when you are zeroing. True chronograph velocities. You might have to tweak the height of your scope for the closer shots to get them to match up. Then use the BC correction to adjust it correctly so it will line up and you should be fine. Don't tweak your velocity because you got that from the chronograph. BC can changes on any projectile on the environmentals so tweak it

 

[cavedweller]

If going into HUNTER class and utilizing HOLDOVER .... you honestly will be a lot happier with a MIL subtension scaled reticle.
Your hold points as viewed will be a easier to do fractional holds between full and half marks.

IMO one of the better scopes made today for american HFT class application is the ATHLON HERAS SPR SFP in Mil ( 6-24x56 )
The mil reticle subtension is already at 16X and has .2 mil scaling hashes between full mil markings.

Chair gun pro absolutely works using the generic Mil-Dot setting with Calibrated and Viewed X power BOTH set to 16x

AS WITH ALL PROGRAMS ...
Scope height is critical to get right.
Pellet weight and speed too
* Errors in actual POA to POI corrected via BC fine tuning so that .... Actual POI charts to the programs stated hold/s.
Do that your GOLDEN !!!

Zero range at programs determined single zero distance !!!!

Adjust scope to determined ZERO and sight in there .... Shoot your 10 yard next, then your 50 or 55 yard distance. using the programs holds, if a bit off ( generally the far and not close ) adjust BC within program to read what POI is actually doing.
All the ranges in between will fall into place once these 3 distances are shot and match the program .... Print your DOPE data and go shooting !!!

Yep.... it's why i have switched to Mrad 1/10 th type scopes.
I always use my Chrono to get the actual speed of pellet choice. Although i might start off with a 25-30 yard zero, if i notice any down clicks are required as opposed to up clicks only, I redo my zero to the point of first or second distance requiring a down click. Then like magic the holdunders go away. Once Zeroed at the correct distance to reflect pellets APEX, i go back to 10 yards, and i aim at a very thin line and pull the trigger = i do this several times; the goal being to then hold the reticle zero over the thin line and actually count the distance (in the reticle) where the pellet strikes. I often have to adjust my Strelock Pro scope height until i get a number that actually matches POI at 10 yards. Once that is dialed in, I'm usually golden out to 454-50 yards and then sometimes i notice pellet isn't dropping as fast as Strelock Pro says it should... that's when i fiddle with B.C. to get it spot on (or for expediency, sometimes i just set out paper target = thin horizontal lines and take 10 shots at each distance my holdover is in question. I will then adjust my printed data to match. Amazing how much time ballistic programs can save you.
Also
Go into tables and make sure you set your start point for 9-9.5 yards and your end point at 60 yards and your increments to .5 yards or .25 yards.

 

[OkAirgunner]

Hello Mark
Using the SIII not sure if you realize but at 16X each MOA on the reticle is actually 3 MOA measurement and it takes 3 MOA on the turret to get to the first mark. I use Chairgun Elite and have used Strelok pro. Both have the SIII reticle. I have found that the BC in the program have worked well for me, but have also generated a BC. One thing I have learned to do is once I get the info in the calculator I pick a couple of longer targets and a couple of shorter targets and then use the clicks from the calculator to verify the info in the calculator. Then I will use the Reticle view to make sure as well. In Hunter class I love the reticle view as it gives me a visual reference when I am addressing the target. By setting up the view with the 3 rings largest being 1.5" and smallest .5" that also give me reference as to the actual kill zone on the reticle.