Thats the problem the point at which the seater hits is not always a constant as compared to where the ogive would hit the lands hence you can end up with variations that you thought you went getting. I havent had a real good load development with the Super Roos yet but I would start with those probably 10-15 Jammed into the lands if possible. Just keep making them shorter by 10 thou at a time and see how they group. you only need to shoot three to see if they aren't working. 5-10 if they are.
There is no way I am sorting Super Roos in any way. It helps to be accurate but a hit is a hit nobody is saying or holding up score cards on how dead the fox is.