Ceaser8-You say your 7mm is dead on at 300 yards.That would mean that all bullets fired would go into the same 7mm hole.Accuracy is basically how close to this ideal that you really get.The truth is that most factory rifles shooting factory loads are not capable of shooting consistant groups of any better than 4" to 6" at 300 yards reguardless of who is shooting them.Some factory rifles would even double these group sizes.A very accurate rifle with properly developed loads and a skilled shooter on the other hand could consistantly shoot groups under 2" at 300 yards.Rifles such as the sendero and vssf and models from other manufacturers are an attempt to produce a more accurate than standard rifle for longer range hunting.On average they will shoot smaller groups than the standard sporters but to be really accurate they must have proper loads developed for them and must be used by a shooter that has developed much better than average shooting skills who is willing to learn this particular guns trajectories at various distances and practise constantly at various ranges to keep his shooting skills sharp.The most accurate rifle in the world would be of little advantage to the average shooter as he does not have the skills to take advantage of it's accuracy.That is unfortunately the problem as many inexperienced shooters are buying heavy barreled long range guns in very flat shooting chamberings thinking that the will magically become long rang shooters.The truth is most will never put forth the effort it takes to become a long range shooter and will be mediocre shooters at best.Simply reading trajectory tables will not make you a long range shooter.Only long range shooting will make you a long rang shooter.To practise long range shooting you must have long distance range facilities,proper equipment and the time and dedication to practise and learn.