Hornady 303 BRIT 150 GR SPMillions of successful hunts have proven the accuracy and deadly effect of the famous Hornady InterLock, SST, InterBond and CX 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.