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Rifles, Reloading, Optics, Equipment
Rimfire and Airguns
Longest .22lr shots
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<blockquote data-quote="WRG" data-source="post: 286825" data-attributes="member: 13638"><p><span style="font-size: 10px"><span style="color: black"><span style="font-family: 'Verdana'">Any shot over 200 yards would have to very lucky at best and here is why a subsonic bullet is best!</span></span></span></p><p> </p><p><span style="font-size: 10px"><span style="color: black"><span style="font-family: 'Verdana'">As I understand it, subsonic is under mach 1 "Speed of Sound". Subsonic caps out @ 1116 FPS at sea level @ 68 degrees but only under this condition. Any change is altitude and temperature the SOS can change so the 1116 fps is not a hard number. A bullet lets say with a MV of 1640 fps "supersonic" with a BC of .125 passes threw what is called transonic, 128 yards down range @ 1116 fps on it's path to 200 yards. Transonic is were it goes from supersonic to subsonic which has a tremendous turbulence effect on anything that passes threw it even airplanes! As it passes threw transonic that would leave a remaining 72 yards until it strikes the 200 yard target. This is where BC and aiming point hold over plays an important role as to whether the bullet can stabilize quick enough before it hits the intended target. Even still, there is no guarantee the bullet will be on the same flight path and most likely it wouldn't be and that's where luck takes over. </span></span></span></p><p> </p><p><span style="font-size: 10px"><span style="font-family: 'Verdana'"><span style="color: black">If starting out at supersonic it would need to remain there the entire distance. I don't believe there is such a round that can do this the entire 200 yards ballisticly. I believe you would need to begin subsonic and stay there to avoid passing threw transonic. So a bullet with the best BC flying subsonic would be the best choice provided it can give the highest possible down range velocity. </span></span></span></p><p> </p><p><span style="font-size: 10px">WRG</span></p></blockquote><p></p>
[QUOTE="WRG, post: 286825, member: 13638"] [SIZE=2][COLOR=black][FONT=Verdana]Any shot over 200 yards would have to very lucky at best and here is why a subsonic bullet is best![/FONT][/COLOR][/SIZE] [SIZE=2][COLOR=black][FONT=Verdana]As I understand it, subsonic is under mach 1 "Speed of Sound". Subsonic caps out @ 1116 FPS at sea level @ 68 degrees but only under this condition. Any change is altitude and temperature the SOS can change so the 1116 fps is not a hard number. A bullet lets say with a MV of 1640 fps "supersonic" with a BC of .125 passes threw what is called transonic, 128 yards down range @ 1116 fps on it's path to 200 yards. Transonic is were it goes from supersonic to subsonic which has a tremendous turbulence effect on anything that passes threw it even airplanes! As it passes threw transonic that would leave a remaining 72 yards until it strikes the 200 yard target. This is where BC and aiming point hold over plays an important role as to whether the bullet can stabilize quick enough before it hits the intended target. Even still, there is no guarantee the bullet will be on the same flight path and most likely it wouldn't be and that’s where luck takes over. [/FONT][/COLOR][/SIZE] [SIZE=2][FONT=Verdana][COLOR=black]If starting out at supersonic it would need to remain there the entire distance. I don't believe there is such a round that can do this the entire 200 yards ballisticly. I believe you would need to begin subsonic and stay there to avoid passing threw transonic. So a bullet with the best BC flying subsonic would be the best choice provided it can give the highest possible down range velocity. [/COLOR][/FONT][/SIZE] [SIZE=2]WRG[/SIZE] [/QUOTE]
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