I shoot a few of them and have built alot of them for others. It will outperform a 243 with slightly less powder. It does run higher pressure though to accomplish this. Very very accurate, good brass, easy to load for. I am in the process of rebuilding one of my comp rifles now and it will be a 6x47 Lapua....it was previously a 6.5x47 Lapua. We run 105 bergers from 3150-3300 depending on barrel length...26" to 30" barrels. Its downfall to 243's is the brass price, and not being able to find loaded ammo if needed.