Pet loads——-Remington nickle-plated cases or Weatherby factory cases, Winchester large rifle primers, 84.3 grains of RL-26 with bullets seated as long as possible to still feed from a full magazine. This has been with the 178 grain Hornady ELD-X.
Same cases and primer, 80 grains of RL-19, flat base Hornady Interlocks made a 1.25”, 3-shot group at 300 yards from the prone position.
I’ve never used the 180 grain Sciroccos. I’ve used plenty of other Swift bullets and anything hit with one has fallen. Bill Hober told me when you find the right burning speed for a Scirocco you won’t get a more accurate hunting bullet.