Do your 300RUMs like the bullets at or just away from the lands? I am about to start working back away from the lands to determine any accuracy gain/loss,..and wondered if either of you have already done this and seen a definitive difference? I know all rifles are different,..but if you both have found the same thing,.. I am using MK 200gr right now,...and have not tried the 215 carts or 216 Clinch river yet. I also have 220gr MK and a 10 twist tube. any recommendations?