1. "Everyday hunting and recreational..." implies that the gun will be carried.
2. "Zombie apocalypse" implies serious tactical use.
3. "Durable" implies real-world, long-term reliability with full-powered ammunition.
#2 is best met by a high-cap semi-auto. If a revolver is still desired, then there is no reason to restrict oneself to six rounds. That leaves two options: Seven-round L-frames or eight-round N-frames.
#3 would appear to be a slam-dunk for the N-frames, however, I have never seen any scientific evidence for the N-frames real-world better durability over the L-frame.
#1 requires that the gun be carried, and in a #3 situation, carried a lot. This requires decisions on how much weight you want to lug around and how long a barrel you want to haul out of a holster in an emergency. Barrel length has implications for performance of magnum ammunition and sight radius, and also "handiness". It may also have be affected by hunting regulations in your area in non "zombie apocalypse" times. "Durability" may also require sticking to stainless steel vs. carbon steel or scandium alloy. Only you can work out those compromises for yourself.
I would add one more possible screening requirement: availability in a gun-store. If you have to special-order it, you have to rely on manufacturer quality-control or be prepared to argue with the factory and then send it back and wait. Their idea of "meets specs" may not be yours.
Throw all of this in a blender and I come up with what is simply my opinion, based on my thinking process:
FIRST CHOICE: S&W 686+, 4.125" barrel.
Pros: Handy. Not too heavy (39-ish oz., same as a 1911). Seven-shot. A frame size and trigger-reach that nearly anyone can handle. Often seen in gun shops (present shortage excepted), so you can check it out.
Cons: Seven shots. Needs speed-loaders. Barrel length may be too short. (Note: the other length commonly available is six-inch and there are also five-inch variations, which I have NEVER seen in a shop).
SECOND CHOICE: S&W 627 PC, 5" barrel.
Pros: Eight-shot. Custom shop action. Reloads with moon-clips. Five-inch barrel gets better performance.
Cons: I have never seen one in a shop. You'd probably have to special order it and take your chances. Moon-clips in revolver calibers can be finicky as to what brands work in which clips. Weighs more (44 oz.). Trigger reach is slightly longer, which may or may not be a factor with you.
HONORABLE MENTION: The 686+ with a six-inch barrel. You trade off length and weight (43.5 oz.) for a revolver that gets better performance (with less recoil and noise), and is easier to shoot more accurately. Locally, I see these about as often as I see the 4.125" version. The long-barreled revolver is more sluggish to handle, compared with the
shorter model.
My personal view is that the MIM-parts and Lock issues are non-starters in the search. Other will passionately disagree.
I enjoy thought experiments like this! Hope this helps others think it through.