Muzzle energy??? About the worst possible means of meas[clippetysnip]
Sigh.
Yet the second most common yardstick in the world after bullet diameter determining the minimum requirements for legally hunting different types of game.
Now that you're at it and seem to have repeatedly ignored facts I've stated, including casting and turning an extremely rapidly expanding hollow point slug from soft lead because of obvious penetration vs. wound cavity issues I've already addressed twice, let's hear what kind of first hand experience you have of the subject at hand.
I'd like to hear more about your cape buffalos you brought up, especially hunting them with slugs you claimed to be a proper choice for the task. How many of them have you personally shot, with what kind of rifles, handguns and shotguns? How about pachyderms? Let's set the minimum weight at, say, 3500lbs so you hopefully won't exhaust yourself too much listing all, not to doubt at all that majority of yours will surely exceed that. For reference, a ballpark number of whitetails and other medium/big game you've shot with handloaded slugs might be interesting to know, to get a picture of your apparent vast knowledge and experience on the subject.
It'd also be informative to hear some basic information of lead alloys you've used to cast slugs, including their linotype content (remember to keep the room ventilated and wear a proper respirator from now on) and the component combination if not exact load and chrony data of at least three or four of your favorite loads. Suppressed SPL and ballistic gel figures would be a nice touch too, to keep this in context of subsonic big bore hunting. What type of rifling do you have in your slug shotguns or do you use smoothbores and chokes exclusively?
You present yourself as such an expert on the subject that you must have something better and more relevant to say than this constant speculation with excuses that you seem to repeat post after post regardless of how many times the facts and details are explained to you. It's quite astonishing to see you complaining about the insufficient penetration of factory slugs (true but irrelevant), hard cast slugs (where on earth did you get that?), "my" hunting slugs penetrating several feet of tissue (literacy seems overrated), "dispatching" literally the most fatal dangerous game on the planet with a slug shotgun (don't even think about it, I'm too much of a philanthropist to hear you got a Darwin Award), comparing <3200lbsft to a ~40.000lbsft artillery piece (self-explanatory), claiming secondary wound channel being meaningless (self-explanatory) and so on.
NONE of which have anything to do with the actual load in question. Unless you count your own imagination as factual reality.
Not that the playstation generation of all things virtual isn't confident they know everything about anything they've never even tried in practise themselves, or distort clearly expressed facts in order to desperately have something - anything - to say. If ballistic gel is something you've only seen on Mythbusters, shotshell handloading equipment strange-looking items you've seen on Midway web page, CNC'ing custom bullet molds that some old gits' stuff that vaguely resembles your shiny new 3D printer, hunting big, dangerous game a sport you've become an expert on your smartphone app and designing and building suppressors something that magicians do for you in a top secret facility once you've paid a tax stamp, PLEASE, FOR THE LOVE OF GOD, SAY IT AND STOP MAKING EXCUSES.
Catch my drift? Now it's your time to shine, so let's hear your first-hand real life experience on this subject. All detailed data is very welcome, of course, and if you ask very politely, I might even share mine, complete with terminal ballistic figures too.