can you please explain why you find it so hard to believe, what would i gain by lying, is it because you haven't seen this accuracy before or is it because your rifle cant shoot small groups, its not the rifle its the guy behind it. all you need is a bit of know how, this is done with a bog standard stalking rifle not a fancy custom job, you and your rifle are more than capable of shooting at these type of ranges, its all to do with getting the balistics right then getting a drop chart done for your bullet once you have got that, its a walk in the park, as for the three yards comment i would