The Wilson Combat Sierra SBT load pairs the 65 grain Sierra GameKing spitzer boat tail bullet with a brass-cased .223 Rem/5.56 NATO cartridge. This round is offered in 20-round boxes and is published with a muzzle velocity of 2730 fps and a muzzle energy of 1076 ft lbs. The load is described as suitable for precision-oriented shooting and field applications, and is reported to be compatible with 1:7, 1:8, or 1:9 twist barrels.
Key Specifications
- Each box contains 20 rounds.
- There are 10 boxes per case when purchased in case quantities.
- The bullet is a Sierra GameKing Spitzer Boat Tail.
- The projectile weight is 65 gr.
- The cartridge is listed as .223 Rem/5.56 NATO.
- The case material is Brass.
- The listed muzzle velocity is 2730 fps.
- The listed muzzle energy is 1076 ft lbs.
- The package weight is approximately 0.554 (shipping weight as provided).
Built around a proven Sierra GameKing profile and seated in brass cases, this load is aimed at shooters who prioritize consistent external ballistics and dependable feeding. Whether used for precision work, varmint or medium-game field use, or tactical-oriented practice, the 65 gr spitzer boat tail offers a balance of ballistic coefficient and terminal performance for compatible rifles. Its published velocity and compatibility across common twist rates make it a practical choice for shooters running barrels specified as 1:7, 1:8, or 1:9.
