In this story I’m working on, the protagonist is a security officer working for a shady human augmentation corporation. They routinely come into contact with cybernetically-enhanced criminals and they chose a Desert Eagle .50 in order to actually do damage to any augmented threats. But I was wondering just how practical would that choice be? From what I’ve found, a box of that ammo goes for about $42, but I’m no expert on firearms.
It’s not. As firearms go, the Desert Eagle is sort of ridiculous. It’s a stupidly big and heavy gun. They’re designed more around the idea of looking cool and imposing, rather than actually being a practical combat weapon. Which is part of why Hollywood loves them.
They have a home in the high end sport shooting market. Basically for the same reasons they found a home in films; it’s big, showy, and looks cool. If you view guns as recreational equipment, want to have the biggest toy and are willing to spend, that’s what the Desert Eagle delivers. That’s also pretty much all the Desert Eagle delivers.
The spending part is important, the Desert Eagle itself is not a cheap gun. Aftermarket rates for .50 Desert Eagles range from $1.5k – $3k. It’s not just the gun, as you pointed out, .50 AE run close to $2 a bullet.
Put this in perspective, your character could buy a Remington 870, and keep it loaded it with FRAG-12s for less than a Desert Eagle would cost. (Assuming they could actually buy FRAG-12 rounds to begin with.)
Assuming your character’s gun is actually part of their job, there’s a decent chance the corporation would be the one paying for it, and the ammo. Especially if they actually expect your character to be using it on people. That said, the expenses would still be relevant, if only because accounting wouldn’t want to see the security division snorkeling through cash when cheaper, better, options exist.
Regardless who’s paying, your character would probably be better off with a 10mm pistol. A Glock 20 will run you around $600, and the ammo is around $0.35 a round. That’s still somewhat pricey as handgun ammo goes, but it’s far cheaper than .50 AE.
That said, the entire reason 10mm Auto never caught on in the real world is because it kicks hard. As with the .50 AE, 10mm Auto is an overpowered round. For perspective, it’s muzzle velocity is between the .357 and .41 magnum cartridges.
If your character absolutely needs something with stopping power similar to a Desert Eagle, they’ll be better off getting a rifle or carbine chambered in 5.56mm. For visual aesthetics, you might want to take a look at the H&K G36C or the SIG552.
Realistically, handguns are what you give someone when you don’t expect a problem but they should have something, “just in case.” If your shady cybernetics company is sending their security forces out to deal with criminals, they’re better off with automatic rifles.
FRAG-12s aren’t off the table. These are impact detonation grenades designed to chamber into a 12 gauge shotgun. Basically impossible to obtain on the civilian market, but for a corporation with defense contracts these might an option.