So it is not in fact true that you use cold torpor alone with no anesthesia or pain medication to operate on a non sterilizable wooden plank surface using nails and rubber bands for restraint, as is depicted and described in your own published work? And it is true that you are legally licensed to perform veterinary surgery? Please do correct these impressions if they are not accurate.
The fact that so many of your victims survive is not a testament to your procedures so much as the sheer toughness of a basically healthy snake. An adult snake in good body condition can survive some really frightful injuries including gunshot wounds and other massive trauma. This does not mean that taking potshots at them for fun is good husbandry.
The fact that you, Ray, are unable to handle venomous snakes in a gentle and humane manner does not mean that the techniques for doing so do not exist. All of the competent professional keepers I know who maintain collections for zoological parks and educational programs use modern humane methods that do not involve any kind of pinning or rough handling. It is a shame that there are people out there who are unwilling or unable to learn modern professional methods of handling, and instead resort to animal mutilation without anesthesia.
The phenomenon of pain and suffering in reptiles is not one that is currently very well addressed even in the veterinary profession. The most modern research on the subject conclusively states that snakes certainly do feel pain, but they are significantly cryptic in their visible behavioral responses. They do not whimper or cry in pain like mammals, and consequently we have a hard time sympathizing with their pain because we expect these mammalian responses and do not see them. But they do feel it, and they undergo measurable physiological and biochemical changes in response to pain. The current standard in veterinary medicine is to give pain relief for a reptile in any situation where it would be appropriate for a mammal.
You seem to be missing that standard. You are also missing a veterinary license, which makes your procedures illegal as well as completely inappropriate. You can continue to post as many dubious justifications as you like, but that's a rather serious issue that you will need to explain to your local animal welfare authorities rather than to a forum of herp hobbyists.