Kestrel AB - Wind calls wrong?

[The Dakota Sniper]

Guys, I'm learning how to run the Kestrel and I made my profiles using the AB curve. What i'm seeing is for my 175 .308 my BC should be a .4 lets say for my wind calls. Using the easy way that Hodnett teaches, and what Frank and Mike spoke about.

I did some messing with my kestrel and its saying my wind calls are about half or less than what they should be. Lets say, 1750 with 4mph wind out of the 3 o clock its calling for 1.34 mil correction...............................


What am I doing wrong? I've trued the gun using CRUSH. Should I just stop using the AB profiles? I've heard so many mixed reviews on the AB profiles...

 

[BigTex]

Could be your compass is not holding calibration. I am having to recalibrate my compass every time I turn it on. If the compass isn't calibrated, wind calls will be off.

 

[The Dakota Sniper]

AB says .47
box is .50

box mv is 2600

my kestrel says 2750 with my can.

so i'm lost as fuck.

 

[BigTex]

Are you getting good elevation data from the kestrel?

 

[The Dakota Sniper]

Are you getting good elevation data from the kestrel?

elevation is perfect.

I'm thinking my compass might be effed. I'll try re calibration.

 

[Deleted member 113831]

AB says .47
box is .50

box mv is 2600

my kestrel says 2750 with my can.

so i'm lost as fuck.

Strelok Pro is saying 2.2 mils @ 2000ft elevation.

 

[BigTex]

elevation is perfect.

I'm thinking my compass might be effed. I'll try re calibration.

my 5700 Elite has been an absolute POS in this regard.

 

[The Dakota Sniper]

Okay, I don't know what happened. I turned my unit back on and it wanted 157 mils for elevation.

I reset the whole thing, (it updated today) It lines up with 4dof wind by .3 mils and 1.0 mils for elevation.

I'll retrue everything up and report back.

Its making more sense now so i'm not sure what happened.

 

[Kobyashi72]

Could you post your kestrel inputs, bullet info and drop data?

It’s going to be difficult to narrow down anything without any quantitative data.

 

[The Dakota Sniper]

Well, I didn't write down before I reset it. I can post what I have now.


Standby.

 

[The Dakota Sniper]

24 INCH AI AT - BH 175 SIERRA BTHP
2720 (WITH CAN)
DM - CUSTOM
BC 1.000
BW 175
BD 308
ZR 100 YRD
BH 2.75
RT 1:12 R

TGT 1750
WIND 3:00 4MPH

HOLD 30.98
1.20 RMIL

77.3 DEGS
ALTITUDE 1864
DENS ALT 3608



To me the wind hold seems wrong. Shouldn't it be more around 1.8?

 

[Deleted member 113831]

24 INCH AI AT - BH 175 SIERRA BTHP
2720 (WITH CAN)
DM - CUSTOM
BC 1.000
BW 175
BD 308
ZR 100 YRD
BH 2.75
RT 1:12 R

TGT 1750
WIND 3:00 4MPH

HOLD 30.98
1.20 RMIL

77.3 DEGS
ALTITUDE 1864
DENS ALT 3608



To me the wind hold seems wrong. Shouldn't it be more around 1.8?

Is this just an academic exercise, or are you really wanting to shoot 1750 yards with a 1/12 twist 308?

 

[MarinePMI]

BC is 1.000?

Edit: Never mind, I see you're running a CDM now.

 

[regency]

I have found that I can't rely on my kestrel for wind calls. Most of the time the wind is doing something different at different distances where I shoot.

 

[Squat]

Same here. I’m thinking of just using it with the geoballistics app and guessing my wind. I did find that I had to loosen the star screw on the wind vane and it was better. The kestrel is killing me for wind calls. Im not that good at wind as is and it’s mking me question everything
On a side note I am selling some .308 reloading components if you are interested dies brass bullets

 

[Kobyashi72]

24 INCH AI AT - BH 175 SIERRA BTHP
2720 (WITH CAN)
DM - CUSTOM
BC 1.000
BW 175
BD 308
ZR 100 YRD
BH 2.75
RT 1:12 R

TGT 1750
WIND 3:00 4MPH

HOLD 30.98
1.20 RMIL

77.3 DEGS
ALTITUDE 1864
DENS ALT 3608



To me the wind hold seems wrong. Shouldn't it be more around 1.8?

You’re running 2720 mv which pushes your wind bracket to a 5 mph

Your wind would be 2.4 at 1750 based on a 3600 ft DA

Process:
Go into environment and turn off Spin drift and set latitude to 0 so you get a pure wind bracket

Set range to 500 yards

Set wind direction to 3:00 or 9:00

Increase your wind until your wind = .5 at 500

That will give you a wind bracket That’s BC agnostic