It used to be a very popular choice amongst first time visiting American safari hunters in the 1970s. One of those big, shiny Weatherby Mark Vs in .460 Weatherby Magnum with those big beastly muzzle brakes. The funny thing is that no one ever brought these rifles with them on their second safari to Africa. I’ll divide my thoughts on this caliber, into 2 sections:
.460 Weatherby Magnum In Weatherby Mark V Rifles
I absolutely loathe them. The extractor is far too unreliable for the huge cartridge… especially in the heat of Africa and when used with full power Weatherby factory loads. Those beastly muzzle brakes can and will eventually make you deaf in the long term. And when we’re taking about a souped up caliber like the .460 Weatherby being used with a muzzle brake, then we’re also talking about your white hunter (or whoever happens to be next to you) possibly getting seriously disoriented (which only makes things far worse, when you happen to be going after dangerous game).
.460 Weatherby Magnum In & Of Itself
I’ve seen 500Gr Hornady round nosed steel jacketed FMJ solids being fired out of rifles in this caliber, which (when recovered from various test mediums as well as at least one elephant bull & cape buffalo) looked as if someone had forcefully brutalized them with a sledgehammer. The very same bullets, when fired from a freshly loaded .458 Winchester Magnum at 2124 fps… were constantly being recovered almost completely unmolested (save for the marks of the barrel rifling), My take on this, is that the velocity of the .460 Weatherby Magnum (in factory loaded form) is far too high for many projectiles… which is what causes them to badly distort upon striking heavy bone of thick skinned big game. The recoil also (sans muzzle brake) is absolutely atrocious.
If you hand load, then you can obviously reduce the velocities in order to make recoil far more manageable. Chambering this caliber in a rifle with a Granite Mountain Arms African Magnum Mauser action, gives you a weapon which is utmost reliable. Only the strongest constructed monometal bullets (such as Barnes or Cutting Edge Bullets) should be employed, in order to circumvent the risks of potential bullet failure.
I personally far prefer the .450 Rigby over the .460 Weatherby Magnum.