BULL’S Sirius Darts – Steel Tip – Stainless Steel – Rear Scallop – 23g. This Bulls Sirius Dart is made from a stainless steel barrel and features a scalloped section with a razor grip cut and a smooth front section with milled dots. A B-Grip-2 shaft as well as Bulls flights complete the dart perfectly.BULL’S Sirius Darts – Steel Tip – Stainless Steel – Rear Scallop – 21g. This Bulls Sirius Dart is made from a stainless steel barrel and features a scalloped section with a razor grip cut and a smooth front section with milled dots. A B-Grip-2 shaft as well as Bulls flights complete the dart perfectly.