Scenario:
A group of PC's spot a group of beastmen at Long Range. The PC's are armed with missile weapons. They presume that they can shoot at the beastmen at least a couple of times before they cover the distance between them.
The beastmen act first as they get good initiative rolls.
The beastmen decide to burn 5 wounds to get a total of 6 maneuvres, allowing them to go from Long Range to Engaged in a single turn, also attacking the PC's in melee who are only armed with crossbows and sling staffs.
Is this valid? It seems all perfectly legal in the rules, but when rationalised in terms of what actually happened in the game world, it's as if the Beastmen teleported to the PC's, allowing no chance to actually shoot them (even though they must have covered something like 150 metres or so).
Am I missing some rule that prevents this kind of situation?