hello all. My gun dealer ia about to place an order for a Steyr HS460 for me, along with this rifle i have instructed him to order me 100 cases of .460. my question is, does anyone know what head the 460 steyr uses on this cartridge. someone said to me that it is a 416 rigby??? please, if anyone can be of assistance please let me know. i believe that the .460 cartridge utilizes a 600 degol head? i would like to find the eqivelent "commercial" head so i can buy it in my country and avoid the possible high price and difficulty getting the propriery steyr .460 head. thanks for your time.