It’s Just Boris asks: “What, no M&P 5.7?”
I have handguns in .22LR, .38 Special, .380 ACP, 9mm, .40S&W, .357 Magnum, .357 Sig, and .45 ACP. Rifles are chambered in 5.56mm and 7.62mm. Adding a new caliber to the stable doesn’t just mean adding a firearm, it means adding magazines and ammo as well. It complicates the supply and storage situation here, and for that reason, adding another caliber means that it has to be a proven performer AND it has to fill another (at least to me) niche that must be filled.
The 5.7mm just doesn’t do that for me. What you are looking at with the 5.7mm is a bullet that is .224 inches in diameter. In a handgun, if I were to add it, the most likely candidate would be the M&P5.7, with its 5 inch barrel. There are no compact or carry sized 5.7mm pistols in Smith and Wesson’s lineup. Now that would mean that I have 22 round magazines, but magazines filled with what? The only real advantages that the 5.7 has, is in muzzle velocity and magazine capacity. Let’s say that I was interested in carrying lots of fast bullets.
- The Speer Gold Dot 40grain hollow point has a stated muzzle velocity of 1750 feet per second from a 5 inch barrel. For reference, a .22LR is about 1100 feet per second.
- Now compare that to the 9mm +P loadings from Speer (1220 fps), or Corbon and Black Hills (both 1250 fps), but a much heavier 115 or 124 grain bullet.
- Similarly, using it to replace 5.56mm is a non starter. It’s essentially the same round, with the 62 grain green tip hitting 3000 feet per second from an AR carbine length barrel.
So I get 4 extra rounds with the 5.7mm over the 9mm, and I am defending myself with what is essentially a .22 pistol. So I am not interested in the 5.7mm.
But if I were going to add a new cartridge to the stable, I would choose one of three:
- I would get a model 629 in .44 Magnum (for the fun factor of having a heavy caliber)
- An M&P10mm for the same reason
- I would get a Defense Distributed DDM41SR in 300Blk, because it’s an integrally suppressed rifle with great punching ability out to 200 meters or so.