30 December 2006, 22:40
tin canneed some help zeroing a .221
I'm using factory 50 grain ammo.
a ballistic chart shows the following:
velocity
2800
2137
1580
1180
0 through 300 yards
trajectory
0
-7
-28
100 through 300 yards
what is a good 100 yard zero?
and, I have to sight the rifle at 50 yards due to space and time limitations- how do I get the 100 yard zero at 50 yards? In other words, how high at 50 do I zero to get the 100 yard zero?
thanks.
31 December 2006, 02:18
Cheechakotin
Here's a ballistic calculator that you can use to do all your own figgeren.
http://www.eskimo.com/~jbm/ballistics/traj_basic/traj_basic.html Ray