![]() ![]() Compared side-by-side with other rounds there is a noticeable reduction in perceived noise when wearing hearing protection, and that’s particularly attractive when teaching inexperienced shooters. When you consider that 85 dB is considered “damaging” noise by most health organizations it’s plain to see that even a single shot fired from most firearms can cause lasting damage to your hearing if you aren’t wearing some form of hearing protection.īy reducing the velocity of their Quiet-22 Semi-Auto ammo CCI has greatly reduced the noise levels generated by these rounds. 22 LR rifles produce roughly 140 dB per shot.22 handguns are even louder, producing upwards of 160 dB. Centerfire rifles produce about 160 decibels, and. In 2014 the Council for Accreditation in Occupational Hearing Conservation conducted a study to determine the volume generated by various firearms. For years rimfire shooters have relied on low-energy, low-noise target and pest control loads when shooting bolt-action, single-shot, or lever-action rifles and revolvers, but these cartridges simply didn’t have the oomph to cycle a blowback semiauto rifle. But if the ammunition doesn’t provide adequate energy to perform the operation the bolt won’t be pushed rearward with enough force to reliably cycle the firearm, and that results in frustrating malfunctions. Blowback actions operate by harnessing the energy generated when a shot is fired: cartridge ignition creates a rapid gas expansion that pushes the cartridge case rearward, providing the energy required to cycle a semiautomatic rimfire action. 22 training and target ammunition, but the problem with most low-power target loads is that they simply don’t generate enough pressure to reliably cycle a blowback. Eliminating sonic boom greatly reduces noise and muzzle blast and offers a quiet alternative to traditional rimfire target ammunition. By reducing velocities to subsonic levels CCI’s Quiet-22 Semi-Auto ammunition avoids the sonic boom generated when an object travels faster than the speed of sound. That’s well below the speed of sound (1125.3 feet per second), and the makes this ammunition subsonic. 22 semiauto firearms.ĬCI’s Quiet-22 Semi-Auto comes in 50-count boxes and fires 45-grain lead round nose bullets at a muzzle velocity of 835 feet per second. 22 rimfire ammunition offers a low cost, low-velocity target and hunting load that, as the name implies, will also reliably run in. ![]() Higher noise levels can not only damage your hearing but your relationship with neighbors, too.ĬCI, the leading rimfire manufacturer in the world, has developed a solution to reduce noise without a suppressor. That means shooters and hunters who don’t have a stamp to purchase and own a suppressor have to deal with higher noise levels-damaging noise levels-than our counterparts in other parts of the world. That said, we have always come to expect nothing short of excellence from CCI ammo.American citizens benefit from the protections guaranteed in the Second Amendment, but the sale of suppressors is more restrictive here than in many other countries. Significantly more quite than the CCI Mini Mag and other high speed stuff. With solid hits squirrels and rabbits go down in place. Kills are instantaneous with broadside chest shots out to 75 yards. This is my go to small game rimfire ammo in the North Idaho Panhandle. There is no fragmentation on impact so the full energy of the all lead hollow point distributes all its energy within small game. 1/4 to 1/2 inch 5 shot groups from the bench are the norm at 50 yards. is extremely accurate from my Ruger American Heavy Barrel bolt action rifle. The squirrels even have the nerve to tunnel into our chicken coup where they munch on my chickens feed. These ground dwelling demons destroy my wives vegetable and flower gardens if not kept under control. ![]() My 13 acre ranch comes under attack by legions of demon possessed ground squirrels just after the spring snow melt. ![]()
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