I finally got to load up some 460's yesterday and tried them at the range today, I have not been able to get any factory ammo in Tassie so I had to try and make some of my own.
Two Words - Holy Shit! lol

A friend gave me some sierra 240 grain sjhp projectiles which I loaded up with 43gr of AR2205. (min is 40 max 45gr) I figured 43 as being some where in the middle, they certainly do bark a little.
Standing next to it when its shot is a whole new experience and you can really feel the pressure waves generated. It seemed to produce some awfully cool looking flames from the barrel and cylinder gap. I wouldnt want to have my thumb/finger or hand anywhere near it.
I shoot the .44mag probably nearly as much as my little .22 so am used to things like metal plates being smacked hard, I can advise the 44 has nothing on the 460 in terms of brute force, it was like it was hit by Thors Hammer. I am sure i heard the steel plate gasp "I surrender" a second after I hit it, and while it dinged it noticably it was the fracture in the chain holding the plates as I found quite interesting.
I have shot cans of cordial (soda cans) before with my 44 and they look impressive, when I shot one with the 460 its atomised the contents and all you saw was a orange mist (fanta). I shot two cans and found less than 1/3 the aluminium for both, it was like the stuff just dissapeared. A frend took video and when I get it I will post, looked cool.
The recoil was pretty decent, certainly not uncomfortable or scary as you hear people bang on about, but you knew you was throwing some serious foot lbs down range. Of the loads I was using I calculated that the 240gr proj doing around 2100fps was generating approx a 2340 Muzzle Energy, now consider a .44 magnum using 240gr (1500fps) pill produces about 1135 ME!
Its such a shame we cant get permission to use these things for hunting in australia (apart from NT and then only if you bend over and say pretty please and use a guide).
They would do nasty things to a deer, hog, roo and i have no doubt would seriously ruin a donkey, camel or even maybe a buffalos day with the right projectile.
So what you guys waiting for get out there and get one!!!!
You know you wanna!