![]() ![]() IF there is a branch or trunk behind as a back stop, feel a bit more comfortable.but even that, given the angled nature of round branches, can bounce one a good long way. I kind of gave up sniping birsd.that "up" angle is bothersome. 22short.can shoot surprisingly well, but as the range increases they tend to shoot exponentially larger groups. In terms of units sold, it is by far the most common ammunition that is manufactured and sold in the world. 22 caliber rimfire ammunition originating from the United States.It is used in a wide range of firearms including rifles, pistols, revolvers, and submachine guns. ![]() Originally developed as a precursor to the long rifle variant, 22 Short ammunition is a pistol caliber used in long guns as well as personal defense handguns. 22 LR or 5.6×15mmR, is a long-established variety of. Wouldn't bet on 70yard accuracy with the. The lineup of 22 Short for sale includes ammunition from top manufacturers like CCI and Aguila for maximum performance whether you load your magazines for sport shooting or self defense. differnce between CB's and HV shorts, but aren't very impressive in the power department (would work on birds.but perhaps not so well on gophers). Target vel.22shorts are quieter than sub-snoic. Doesn't sound much differnt to the shooter, but if that short bullet is faster than sound, the crack seems to be more noticable. 22short often goes trans sonic.so you get a smaller "bang" but a louder "crack" than sub sonic. Got the "bang" or escaping gas and the "Crack" of a trans sonic bullet. īut a 47" 22 rifle are quiet with 0.65 gr of powder. the bottom line is that a 25" 22 caliber barrel will be quiet with up to 0.45 gr of powder. Sparing you all the details of my low sound wildcats, 12 foot long guns, and experimenting. That made sense with the peak of the wave at 2A and the trough of the wave at 0A, which is the threshold of cavitation, Someone calculated that the threshold was one atmosphere above ambient. I knew a little about spherical sound waves, but not enough to calculate the threshold. I had taken EE360 Accousitcs at the Univ of Wash from Rubens Sigelmann when he was developing ultra sound technology. He said the difference was the threshold of super sonic gas escapement. Professors did not have the answer, but a gunsmith, Randy Ketchum, with two year of college did. The 24" made three distinct sequential sounds 1) the firing pin, 2) the report from the muzzle, and 3) the bullet striking the target. I became curious 20 years ago as to why a 22" barrel was so noisy and a 24" barrel was so quiet with Remington CB Longs. Given the choice, i wouold and do stay with a standard or match velocity in the 700-1050 to help take out most of the variables over longer distances and temperature swings. keep in mind these types are also produced in a more "pump it off the line and out the door" bulk type manufacturing, where even lower grade match ammo gets at least a little more attention to detail and manufactering machinery calibration to at least "pump out" a little better quality product. in other words, if you are using velocitors, mini mags, or just plain ol' HV there shouldn't be all that bad of groups (again depending if your rifle likes them and bullet design) if you are staying within that distance of going transonic. HV really only gets inconsistant if you are shooting it past the point of where it drops out of super sonic speed. but at around 100yards, just about everything starts messing around with rimfire ammo. Humidty - as far as FPS at the muzzle it isn't much of a concern to me, until i start getting out about 100 yards - then the "thicker" air starts to actually start showing up POI differences. the specialty type as mentioned above has it's drawbacks when launched at longer distances, but within 75 yards and depending on if your rifle likes them, work pretty good when trying to be discrete. of course the slower stuff will drop more than HV, but generally be more consistant / accurate at any distance. Over the travel of the bullet, you'll have more stability from muzzle to target as there's no transonic stuff going on over any of the trip there. the trueist of labeling is the aguila with super subsonic designation, which in my opinion is like a generic term that describes CCI quiet, rem cbee, CCI cb both in FPS and sound, getting below 700 fps 10 ft from the muzzle. The truely really slow / quiet stuff should have a specialty type branding on it including the CCI quiet, rem cbee, CCI cb, and the like that have a majorly reduced powder charge, or even no powder at all and relies on the priming agent to propel the bullet. The closest thing i've found that matches up with the print on the box is. IMO a fine example of subsonic gimmic on the box is remington subsonics, through a chrony i've recorded the same FPS 10 feet from muzzle as wolf extra & match, yadda yadda. so anything under that 1080 / 1120ish print on the box is really subsonic as it never goes past the speed of sound (depending on extreme environmentals). Technically, match / standard velocity type ammo is subsonic as it's below the speed of sound from muzzle to target. ![]()
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