Size and feeding chart

Just wondering, is there any sort of chart out there that tells you what size mouse/rat you should be feeding your snake according to their size and weight? I know that it shouldn't be wider than the snake's widest part, but I was just wondering if there was something that was like, when its this many grams/oz it should be eating this size rodent. I'm just wondering at what point i should graduate to the next size up. I know I don't need to anytime soon, but I was just curious for future reference.

You could use they 10-15% of the snakes body weight. I tried it early on when they were growing fast and it worked out. The latest issue of reptile.magazine has a chart in it so maybe I can find a link for u

I just eyeball it and try to grab one 1.5 the thickest part of the snake...i have way too many to feed to weight each rat...

my biggest problem for eyeballing it, is that the pet store near me that sells the f/t mice and rats has them in bags where you can't see it----gourmet rodent is the brand. i'm sure there is a standard size for them but it varies with each rodent. i have gotten fuzzies that are so small they look like they could be pinkies, and so big they look closer to hoppers, and anywhere in between. so it is hard for me to be able to know what size i am buying.
i have only weighed my bp once, and he was 83 grams or something like that, i can't remember exactly, i have it written somewhere. he is in shed now and i plan to weigh him again after the cycle is over.

he refuses to eat hoppers for some strange reason and is on 2 fuzzies a week right now. since he is soooo picky i want to move towards rats sooner than later so that i am not having to give him a whole bunch of fuzzies. but at the same time, if he keeps refusing anything but fuzzies i am going to have to figure out how many are equivalent to whatever size rodent he is supposed to be eating for his weight and size.