No offence intended, but deliberately heading out to shoot game at 500-600 yards is very irresponsible. You are purposely decreasing your chances of a quick, humane kill and greatly increasing the chances that you will wound or terminally injure an animal. At those ranges it is likely that you will not find the wounded game and it will die needlessly. �Sniper rifles� are indeed cool, but I doubt that you�re trained as a sniper. A trained sniper would know that deliberately decreasing your odds of a quick efficient kill just for fun is a foolish idea.