Butlersrangers
True, the Boer were riflemen used to small group fighting and no or minimum casualties. Therefore, longer distances to keep them away. Engaging the enemy at a distance and then withdrawing not to commit forces. Lots of individual thinking and action. The long distance formal battles were the exception.
On the other hand the Britishicon were very much used to massed columns and squares in battle. Volleys fired on command, little individual shooting. Took them some years to partially adapt.
Two very different cultures meeting on the battlefield.
Still wondering what mad the powers that be decide on the massive distances required for rifle sights. There must have been some creative unthinking with widely unrelated conclusions based on hearsay facts to decide on that.