Millions of successful hunts have proven the accuracy and deadly effect of the famous Hornady InterLock, SST, InterBond and GMX bullets we load into Hornady Custom rifle ammunition. Every round of Hornady Custom ammunition is hand inspected before packaging to ensure the highest levels of quality control. At Hornady, we manufacture Custom ammunition to give shooters and hunters the advantage of handloaded accuracy in a factory load. Product Features Expansion and Penetration : An industry leader and customer favorite, Custom ammunition balances expansion and penetration and is well-suited to medium and large sized game. Ballistic Efficiency : Most Custom loads feature bullets with a secant ogive design. This pioneering profile, developed by Hornady, creates the optimum blend of ballistic efficiency and bearing surface for flatter shooting and less drag. Product Specifications Caliber: 358 Winchester Bullet Weight: 200 gr SP InterLock Product Line: Custom Muzzle Velocity: 2475 fps Muzzle Energy: 2720 ft/lbs Quantity: 20 Rounds per box