I did a switch barrel 6 dasher and a 284 on a 700 SA. Bought some 155 HH but they're to long and take up to much case capacity, even with a Wyatt extended box. So I'll send them back and try the 143 HH. Next up is a 25-284 to shoot the 131BJ. Most of my game is shot at or under 500 yds, so I don't really need the highest BC or latest and greatest cartridges but it's fun.