You're probably right on that. But because B. caudalis and co are rare in Europe, I wouldn't go for a too big risk. And a cool hibernation is always is risk of a loss......for me there's safety first
But you are definitely right on that, that the temperature could easely be deeper then I mentioned before.
Here some new shots of the first meal for my caudalis CB'2007. You can see the Hill's pulp in use...
Preparing for the action, safety first - for me and the snake of course:
lunch time...
After using the stomach tube, you have to carefully massage the pulp downwards. If you don't do this, the snakes regurgitates about 50-10% of the pulp:
After it's meal:
Hope you guys like the pictures, sorry about the poor quality, but my girlfriend is a terrible photographer
Cheers
Marco