Hiya Guys, I have just started to work up a .243 load for my Tikka T3 Super Varmint. I want to use it for deer hunting and want to use 90 bergers for it. I have them grouping sub .5" at 100yds but the ES and SD is over 70 and 35 respectively and the 200yd groups are very poor. I am not sure what the best way to improve this but my first plan was to reduce the neck tension on the bullets by only neck sizing the first 40 thou of the neck using my redding competition dies. I was hoping this might help the ES and DS. Am I on the right lines??? Or is there something else I should try ???