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.
