Have any pictures of the new corn snake? That will be one sure way to get an idea if its weight/length is good. ALso, what is its weight?
Since normal corn snakes can range in length naturally between about 3' to 5', depending on where they are found, 4' sounds like a good average size. I had two normal corn snakes that were around the 5' mark, maybe a bit more. The male weighted about 1000g and the female was around 900g if I Recall correctly. Both were a little on the plump side when I weighed them so I reduced feeding to let them loose a bit of weight. I also had a 3-3 1/2 food snow corn who weighed around 600g but looked rather plump...she looked much more healthy when I had her drop about 75g or so.
Typically I fed my corns once every 10-14 days, usually a rat pup or fuzzy (the bigger for the bigger corns).
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PHLdyPayne
Forum Princess