What is actually documented
The supplied material points to a Reddit post about an artillery calculator and to a third-party artillery-calculator page. The source WARDOGS Wiki currently marks its Mortars record as a stub, so there is not enough first-party published ballistic data here to certify exact in-game solutions.
Use community tools carefully
A calculator can be useful for testing a range, but verify its version, map, weapon, and input units before using it in a match. Do not enter guesses as though they were validated values, and do not copy a solution from an older beta video into the current build without a firing-range check.
Work as a spotter team
Use a repeatable callout: identify the target, give the observer’s map reference or range, fire a test round, and relay a correction. The source wiki records range-finding equipment, while the community references provide tools; neither replaces live observation and team communication.
Sources and version boundary
These sources are used as evidence, not copied text. Community and video recommendations are version-sensitive; the official Steam page and in-game UI take priority when values conflict.