Just finished the 100 round break in for the replacement barrel. Went from a 223 Ultra to a25.06 Ultra. Groupings are consistently 3/4" at 100 YDS with 87 Grain hollow point. The 115 and 117 grain were shooting around 1" Started out with the new barrel and average groups pulled 1.5"-2" Now it is time to tinker with the load and see if I can shrink it down anymore. We soon shall see.