New ‘Quiet-22′ Rimfire Ammo from CCI — Just 68 dB of Noise

[Dangermouse]

http://bulletin.accurateshooter.com/201 ... -of-noise/

How would you like to be able to shoot a rimfire rifle or pistol that only makes 25% as much noise as a standard .22 LR gun? And no, we’re not talking about a suppressor-equipped firearm. CCI claims that its new Quiet-22 rimfire ammo “generates one-quarter the perceived noise level of standard velocity .22 LR rounds.” So this stuff is very quiet indeed, and it’s also affordable — a 50-round box sells for under $4.00 at major online vendors.

CCI’S 710 fps Quiet-22 Ammo only produces 68 Decibels (dB) of sound at the shooter’s ear (compared to 132-139 dB for a standard .22LR). How do we put that in perspective? Consider this: 68-70 dB is the noise level inside a typical family sedan cruising at 70 mph. For additional comparisons, a typical alarm clock ringer produces 80 dB of noise, while a hair dryer can deliver 90 dB. The sound levels at rock concerts can top 115 dB, and a chain saw can hit 125 dB.

To achieve its low sound levels, CCI’s Quiet-22 ammo sacrifices both speed and energy. Rated velocity is just 710 fps, and the 40gr LRN bullet only has about 36 ft-lbs of energy at 100 yards. So this ammo may not be a great choice for varminting, except for very small prey. On the other hand the ammo could be ideal for short-range plinking and fun shooting. For paper punching, CCI notes that Quiet-22 ammo offers better performance than an air rifle with similar noise levels. CCI’s Quiet-22 Ammo may also be perfect for areas where shooting is allowed, but noise pollution is a concern.