The Deluxe H-50 ammo box was designed for ammo protection and ease of transporting. Bullets are protected by four special fingers. The fingers are designed to keep most bullet tips from hitting the bottom of the box, preventing tip damage that can change bullet flight characteristics. Calibers: OAL bullet up 2.37", bullet down 4.1" 17 Fireball, 17/221/223 Rem., 204 Ruger, 222 Rem. Mag., 223 Rem. HP, 300 AAC Blackout, 300 Sherwood, 300 Whisper, 32 Ideal, 350 Legend, 5.56x45, 6mm TCU, 6mm-223 Rem, 6x47, 7.62x37 Musang.