I thought I kinda understood this thread but why, when looking at the flight of a .22lr from 12.5 to 66 yards would you want to sight in for zero at 25 yards and not 59? I might have missed something??
http://rimfirecentral.com/forums/showthread.php?t=56146&highlight=trajectory
http://www.gunsmoke.com/guns/1022/22ballistics.html
The bullet starts off 1.5" below the line of sight or your scope height, if the scope is 1.5" above the center line of the rifle bore then at about 12 yards, the bullet crosses into the bottom of a 1" target circle, and at 25 yards is .2" above the circle center. When the bullet reaches 40 yards it is at the top of the 1" circle, and at about 67 yards the bullet falls out the bottom of the circle. At 100 yards, the bullet is about 4 3/4" low using 40gr 1260 fsp .22lr . Yes chamber tightness and ammo makes a difference . Surprising how much difference there is in a 59 yard zero with 1260 fps and 1740 fps ammo.
http://rimfirecentral.com/forums/showthread.php?t=56146&highlight=trajectory
http://www.gunsmoke.com/guns/1022/22ballistics.html
The bullet starts off 1.5" below the line of sight or your scope height, if the scope is 1.5" above the center line of the rifle bore then at about 12 yards, the bullet crosses into the bottom of a 1" target circle, and at 25 yards is .2" above the circle center. When the bullet reaches 40 yards it is at the top of the 1" circle, and at about 67 yards the bullet falls out the bottom of the circle. At 100 yards, the bullet is about 4 3/4" low using 40gr 1260 fsp .22lr . Yes chamber tightness and ammo makes a difference . Surprising how much difference there is in a 59 yard zero with 1260 fps and 1740 fps ammo.
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