(You may have to hand-load some of them into your bolt, but it will shoot them.) If you use a bolt-action rifle you can get away with shooting a much wider range of ammo types. Some standard velocity stuff might work, or you also have the option of tailoring some of the recoil springs to work better with std vel ammo. You may have to select carefully to find ammo that will make your M&P 15-22 operate reliably. The 22 short will present the same problems with loading in modern auto-loaders, and also leaving extra crud in the chamber. If I remember correctly, I read somewhere that the 22 short was originally manufactured as a blackpowder cartridge and used for indoor "parlor" shooting (in people's living rooms!). This brass case is even shorter than the 22 long. This old ammo design may not feed well through the mechanisms of auto-loading firearms designed for 22lr, and can leave the chambers extra dirty in these newer guns, but they are safe to use otherwise.Īn even older form of 22 ammo is the 22 "short" cartridge, which will also chamber and fire in almost all firearms designed for 22lr. The brass case is the same length but the shoulder of the bullet is shorter (and the cartridge overall length), the case holds less propellant, and this cartridge has less power than 22lr. Quiet ammo loadings develop less energy when the cartridge goes off and may not reliably cycle the action of an auto-loading firearm.Īn older form of 22 ammo is the 22 "long" cartridge, which will chamber and fire in almost all firearms designed for 22lr. There are other Aguila ammo types that use 20 grain bullets and no propellant at all, relying on the power of the primer alone to move the lightweight bullet. Another quiet ammo is Aquila SSS 22lr ammo, which uses a shortened case and reduced propellant along with a 60 grain heavy bullet. The key to CCI Quiet is that this ammo is supposed to have less muzzle blast (noise) because of the reduced propellant load. Most people will associate this with CCI-brand "Quiet" 22lr ammo, which uses a reduced load of propellant (but still has a 40 grain bullet) to produce MV of 650 to 700 fps from a rifle-length barrel. ![]() Super quiet ammo is a rather small category of products. Then again, some of these superfast ammo products have poor accuracy at any distance you will just have to test for yourself. High velocity ammo can potentially be nearly as accurate as target ammo IF used at short enough range that the bullet remains supersonic throughout the entire trajectory. Many of these are loaded with light bullets (36 grains or less) to attain the extra velocity. This includes products such as CCI Stingers and Velociters, Remington Vipers, Winchester Super-X, and many others. High velocity ammo has a MV of at least 1200-1300 fps and may be as high as 1400 or 1500 fps. ![]() but you have to start somewhere with definitions.) Standard velocity ammo is commonly considered to be the most accurate because it is subsonic throughout the entire trajectory and avoids the accuracy "burble" caused by decelerating from supersonic to subsonic speeds. This ammo type includes lots of "Target" ammo and many brands that are labeled "Subsonic." (The speed of sound is 1,117 fps at sea level on a ICAO standard day.which is only going to make a big difference to you if you are an aerospace engineer doing some vehicle performance calculations. These are typically loaded with 40 grain bullets. Standard velocity ammo usually has a MV of around 1050 to 1100 fps, and is subsonic in most conditions from many rifles and almost all handguns (shorter barrels give less muzzle velocity). I don't know how much of a "newbie" you actually are, but just in case, here are a few details to point out the differences in some of the 22lr (long rifle) ammo types that you will typically run into.
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