Proposed Ball Python Feeding Chart

[sorraia]

One thing to remember for anyone who thinks "eyeballing" a feeder's size isn't precise - with reasonable experience, most breeders/hobbyists/owners can tell you within ~10% variance what a rodent weighs, just by "eyeballing". THIS is where experience IS science (or simple math, or whatever you want to call it). No one is going to search through feeders to find one that is 43.7g because that is EXACTLY what the "correct" size is for their snake; that's why the size classifications have ranges.

This.

I periodically weigh my snakes (once or twice a month) to keep tabs on their growth. For growing snakes I'll also make a quick calculation of how much they should eat based on the "10-15% rule". With my rats (growing my own) I'll pull out a baby or two from a litter and weigh them just to see where they are at in their growth. This has helped me learn how to eyeball their approximate weights. There will be variations, and it will also depend on when the rat last ate, if their bladder or rectum are full of waste products, how much water they drank and when, etc. A few grams in variation isn't a big deal. But by doing this I've learned to eyeball my rats and match up the right size to the right snake without weighing everyone every time. It works for me, and my snakes are thriving.