Hi Redhawk,
I've found the red dot sights work great. They are fairly small. They don't add much weight to the gun. They allow you to keep both eyes open for the shot. They hold up fine to recoil (at least up to my SRH in .480). Currently I have a 2X scope on the SRH, but I think I will be going back to the red dot. I like being able to keep both eyes open, and the scope on a close shot was difficult due to the reduced field of view.
Good job on the deer! He's a nice one.