.500S&W would be good to have as a side arm, but certainly not the primary weapon.
Except that just short of an act of god there is only one country that allows elephant hunting where you are allowed to carry a side arm.
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Ok, then how about the 2 bore
http://www.2-bore.com/home.html why not double the cool factor
You get to carry it..
* Caliber: 2 Bore (1.325" groove diameter)
* Action: Left hand Jones Rotary Underlever w/Back action hammer lock and extractor
* Barrel: 28" long (1:48 twist) w/ Quarterrib and ramped front sight base.
*
Weight: 22 Pounds 3 Ounces w/ 3-13ounce mercury recoil reducers
* Length of pull, drop at comb, drop at heel and style of stock were all built to the customers specification.
* Stock: Sugar Maple w/ ebony forearm tip, stained to customers specifications, oil finished, and carnuba waxed.
* Checkering: 20 Line Per Inch Semi-flattop, borderless.
* Finish: Action, Underlever, Triggerguard, Grip Cap, Back action lock, Off-side plate, and escheutons are Color Case Hardened, the monoblock and barrel are rust blued, the screws are nitre blued.
* Recoil Pad: Pachmayr Decelerator
* Sights: Rear - NECG Multi-leaf Express Sight, Front - Stolzer and Son's Partial Silver Caterpillar.
* Cartridges: S&H 2 Bore Black powder express 3.5" 700gr FFg.
* The Rotary Underlever acts to the right, at the request of the Customer, all other functions are left handed.
* Engraving is a custom pattern by Stolzer and Son's in traditional broad acanthus leaves.