Adjusting MGRS to Map Scale

[awalker2055]

I'm trying to make a simply layout with an MGRS overlay with a map scale of 1:25,000. This is to be printed on a 8.5 x 11 sheet of paper (the map frame itself is 8 x 10.5). I want to be able to use the MGRS overlay to plot points using a protractor once I print it off. When I tested this to see if it works, the MGRS grid is larger than the appropriate scale on the protractor I intend on using for mapping, despite the scale of the map and frame being 1:25,000. Am I misunderstanding how MGRS works or does some adjustment have to be made in ArcGIS pro for this to work?

[VaibhavS]

There are two MGRS grid style items included in the ArcGIS Pro systems styles, one designed with 1,000 meter gridline intervals and one designed with 10,000 meter gridline intervals for smaller scale maps. I believe we would have to select the correct style. 

Please check if it helps: 

MGRS Grids: https://pro.arcgis.com/en/pro-app/latest/help/layouts/mgrs-grids.htm

Calculating MGRS values for features: https://desktop.arcgis.com/en/arcmap/latest/extensions/defense-mapping/calculating-mgrs-values-for-f...

[KanaiGooding]

I can confirm this is a HUGE problem.  MGRS lines in ArcGIS seem to be spaced approximately 1100m apart.  The scale bar seems to work correctly. I have done this with known distances on maps, and MGRS grids seem to be wrong in the ArcGIS software.  

I've made recommendations to the boss to cancel subscriptions to the software until this is resolved.  As my shop cannot use ARCGIS for mapping purposes due to this error.  Unless there is a fix or we are doing something wrong, ESRI is failing to provide the basic needs to it's mil customers.