This is .376 Steyr Hornady Custom Rifle 225gr. Interlock Spire Point Ammo. Hornady and Steyr introduced the .376 Steyr in 2000 as a joint development. Hornadys InterLock Spire Point bullets have reached legendary status among safari hunters. The Interlock Soft Point has great expansion and weight retention. This ammo comes packed in 20rds. per box.