I know of 2 breeders who have bred milk snakes with no brumation or cooling what so ever.... one breeds hondurans and nelsons and the other accidently bred pueblans thinking he had 2 males!
Now I am wondering if it is possible or evene asy to breed milks with no brumation - i have a pair of pueblans(both prven though not together) which i want to breed but i cannot lower temps below 18 C anywhere in my house - do you think i could get away wqith not brumating like my buddy with the hondurans and nelsons he has bred so many times?