With the right load, a 300 yard DRT shot is not that uncommon, but the problem usually lies with the round make up rather than the weapon or caliber..
Just like the .204, some try to make it a 'do all' round and then get disappointed when things don't go the way anticipated..
Bushy makes an excellent point on bullet drop with a more wind resistant heavier bullet...Not that many people are that good at estimating actual distances for the longer shots, and the 'drop' factor can get really critical..