I've never tried any lime of any stripe to make rawhide.  This will be my first run at it, been buying the hides from a friend, but he's outa the tanning business now.  Got a basic recipe?  How much lime to how much water and how many lbs of hides?  These antelope hides got a lot of hair and mighty thin skin.  I've even thought of leaving the hair on and backing a bow with it just for laughs.