pinky's!....hmmmm I never feed my pinky's there mother always does!
Ok!! pinky's.....I don't have an exact weight, but I feed my leo's pinky's when they become available, (as I raise my own). I always offer my females first (especially after laying). Some of them refuse to eat pinky's so then any left over or extras go to the males, or I just let them grow up till I can tell the sex, then all the males go to Barney (my tegu)
But since the mice seem to multiply so damm fast I have a small army of them. Right now I am picking out all the odd colors and barney is very happy!
Now I am working on a jet black "morph".
But to answer your question, usually adults maybe over 40 grams? I tried to feed a tiny pinky to one of my juvies, it was probably 25 grams and the pinky was really small, but the leo had no interest.