I have never let any of my guns go that long before cleaning!! If I kill a deer I will get them checked in, hungup, skinned out and if cold enough I will then clean the gun used. If its too hot I will get the animal in the cooler ASAP then clean the gun.
My freezer is full, but still have one tag left, so will try to get one more in late season this month for jerky.
I like the idea of muzzle down for storing tho...