Garmin 701 and Left Twist Barrels

[Dlwheel]

I wonder if anyone knows how to setup left-twist barrels in the Garmin 701?
I have LH 7T Bartlein's that I need to setup.
I've tried running the barrel twist setting to a -7.00 thinking that might do it. But it still calculates SD as though it were a RT.
Thanks,
-dlw

 

[DocUSMCRetired]

Using a negative number should do it.

Have you changed a field to read out SD by itself? Without HCor and Wind?

 

[Dlwheel]

Yes. the SD correction shows a left hold whether I set twist at 7.00 or -7.00

AJ and Corlilis is off.
Wind is Zero

Garmin701 about shows:
GPS: 2.30
B Core Build: 45
AB Database: 787

V2.80 Rel (e6b08fd)
701 V?

Range is 1577yds
Spin Drift is .37L with either 7 or -7 twist.

 

[Dlwheel]

Using a negative number should do it.

Have you changed a field to read out SD by itself? Without HCor and Wind?

When I turn AJ, it’s solution doesn’t not take the minus for LH twist either. It computes as RH twist.

 

[Dlwheel]

Using a negative number should do it.

Have you changed a field to read out SD by itself? Without HCor and Wind?

Doc,
Are you saying that when you input the twist as a negative that the solution reflects a left twist barrel?
If so, should I try resetting my Garmin or what do you recommend?

 

[LastShot300]

When I turn AJ, it’s solution doesn’t not take the minus for LH twist either. It computes as RH twist.

If SD remains with the same sign then the software is not accounting for right or left twist, it's as simple as that.

 

[Dlwheel]

If SD remains with the same sign then the software is not accounting for right or left twist, it's as simple as that.

For sure, i agree. it is just that Doc seemed to imply that it should be working. I wanted to eliminate my unit being screwed up by an update or something.

 

[DocUSMCRetired]

Doc,
Are you saying that when you input the twist as a negative that the solution reflects a left twist barrel?
If so, should I try resetting my Garmin or what do you recommend?

That is correct. We can try to re-create the error to see if it is a bug. I attempted this on mine and it functioned properly. Also please check and make sure SD and AJ are turned on.

 

[Dlwheel]

I have tried it every which way. With AJ on or off the SD still only reflects a RH twist.
Before I got my LT barrels I think I had tested this with negative twist and it worked. But I’ve updated my unit since then.

 

[Dlwheel]

Update: Garmin is going to replace both units. Neither will calculate solutions for LH twist barrels.
I feel like the last update caused this, but Garmin wants to replace them anyway.