I had to aneal the brass in my 243 wssm that I had in an AR. lube it well and turn your die down a turn past contact with your shell holder. Not every rifle will shoot better in or close to the lands. You don't need a bunch of fancy tools to find your lands in the rifle. Start with your sizing issue. When you stop having feed proble,s your accuracy will come together cause your not pissed off lol