I have been reloading for more than 40 yrs., most of my loads that exhibit best accuracy are near the center of the data. Many of today's loading manuals give info on the load that produced the best accuracy in their test rifle. Another source that I frequently refer to when developing new loads is Ken Waters Pet Loads. I recently used some Waters data to assemble a load for my .35 Whelen, Ken's starting load showed promise and the next load he listed was 2 gr. more which produced a 3 shot group that a quarter easily covered. Just the kind of accuracy I was looking for, needless to say I was very pleased. I neck size my brass and weigh all my charges, don't do anything else other than that and with a little experimentation with charge weights have always been able to come up with good loads.
forgive the dumb question but what do you mean by "neck size" your brass?
