Hornady 6mm 80 Gn GMX - Distance to lands?

[Bache Kermooni]

I am trying to minimize my load development time and cost (each trip to the range with gas, tolls, and fees is approx $80).

Sharing your actual experience is greatly appreciated. In case you are wondering, it is for a 6mm AR / 243 LBC / 6mm Grendel.

Thanks.