looked at their website and 3rivers but no info there, except that the 190gr elgrande is 1 3/16".
found it. 1 1/16"
Ozy, its supposed to be 1 1/8", all the non El Grande are the same dimensions, just different thicknesses. In my experience though. its more like 1 1/16" and after sharpening, its closer to 1". I killed my first buffalo with the 160, which I still think is one of the strongest and best penetrating heads.