Jackie,
You are right on with the scoring hassles. I have been shooting 30s in group for several years and for a while the scoring was a battle. Fortunately, there are some real nice people at the ranges where I shoot the most, and they have been real helpful and tollarant of my obsessive experimentation. I have also been trying to develop a 6.5 Grendel or 6.5 BR for group shooting, but with the same scoring problems. The 30 is quite well accepted now in most places, but the 6.5 has been a real challenge. The NBRSA rule book says if you don't have the proper reticule, to measure edge to edge with a 6MM reticule and subtract the difference in caliber (.021"), but the people at the nationals last fall just would not cooperate and do it right. I protested a few targets, but only succeeded in pissing off some people. I finally had a real nice cordial conversation with the scorer, and we both came away with a little better tolerance of the situation. At least after that I felt the measurements were a lot closer and felt he was trying to do the best job possible with the bad situation that I had caused. A few years back I was shooting a 6.5 BR at Palmasano's range. I had given the scorer a measuring device to use for my targets that had a 6.5 reticule, but also used a dial caliper. Unfortunately the scorer didn't know how to read anything but a digital readout and all my targets were measured .100" too big, and I didn't notice it until it was too late. Very frustrating, I would have won that yardage. Some people will ask, why bother? I'm sorry, but it just isn't in me to not try and find a "better mouse trap". By the way, the 6.5 really shoots great, especially in HV. And, as you know, so does the 30. So, I feel your pain.
Don't give up,
Larry