Truing MV and BC on an inclined range

[Nap Mag]

The range near me is on an incline (see pic). When truing MV at 500 yds and BC at 800, does the degree of incline affect the accuracy of these measurements? I do use the horizontal distance on my LRF, not the LOS distance, but something tells me that the incline may still be an unaccounted variable.
I dont know how much of an incline it is but will try to figure it out next time I’m there.
Thanks.

 

[Lowlight]

yes the angle matters, it changes the POI, so the data as to be matched to the conditions

 

[ShtrRdy]

I would use the LOS distance and enter an angle. Then let the ballistic calculator figure it out. Using the horizontal distance is a poor approximation.

 

[LastShot300]

Never do that on an incline, as LL posted out, you are introducing another variable that will only create havoc in your truing.