Whether most any bullet shoots in your rifle is up to your rifle, and you.
: Many people can't get "X" bullets to shoot, but the .22 Hornet, .260Rem and 7mm BRNO rifles I have, shoot them into less than 1/2" for 5 shots. I'm happy.
: The sirrocco's I've seen written about, seem to be very soft with excessive expansion when driven hard, with average accuracy.
: Due to their excessive cost(up here), I think there are better, more accurate and lower priced bonded bullets available. ie: Nosler and Hornady both. The Federal fusion also seems to shoot well in most rifles but I think is available in factory ammo only.