I have to agree with JDHogg in hoping nothing changes with Barnes. Just tried their 168gr TTSX in my new Sako A7 in 300 WSM. I was working up a load so just loaded 2 shells for each different load. First two shots touched and the remainder of the loads were within 1/2 " or less. Best grouping I have had out of any rifle. I worked up a load using Nosler Accubonds in 180gr and the accuracy was not near as good.