Never had a 243 shoot like a BR, but EVERY 243 shot sub moa by a good margin. In fairness, not had a custom 243. If building, the XC will be less hassle keeping brass trimmed, but no doubt a 243 is a great round as is, not great on bore life, but easy on the shoulder and high on performance.
Twist is key, too bad every 243 does not have a 9 minimum and 8 preferable ROT.
Factory rifles and ammo in XC and perhaps 6 Creedmoor would be nice to see.
