SOURCE: tasco 6-24x42mm rifle scope parallax adjustment
Here's what you need to know about Mil Dots and rangefinding.
When you look through the scope you should see 5 mil dots on each axis, your scope may have broad lines taking place of the 5th mil dot if it is a "modified" mil dot scope. For measuring purposes, 1 mil is the distance from the center of one dot to the center of the one directly above or below it. 3/4 of a mil is the distance from the top of one dot to the bottom of the one above it, or the "space in between dots". 1/4 mil comprises a single dot, the space between the top of one dot and the bottom of that same dot.
A quick calculation is Size of Target (In Yards) x 1000 / Size of target in mils = Range in Yards
Miliradian or "Mil" is an angular unit of measure, so if you were shooting at 1000 yards and moved up 1 miliradian that would be one inch impact moved up.
Anyway lets say you have a 30" target and we need to find the range... using your scope you place the bottom of the target at the CENTER of a mil dot and count how many mils up, good estimation is key... I'll draw a little text diagram, an asterisk * will be the target top and bottom, and parentheses () will be a mill dot
( * )--------( )-----*---( )
Now lets assume the asterisk on the left is the bottom of your target and the one on the right is the top, I put Ten Hyphens in between each dot so if you count from the left you should get about 1.6 Mils. Its real easy to do it in your head, you already know two whole dots is one mil so you just have to estimate whats to the right (or top if you were looking down a scope).
So we know the target is 30" and we have a Mil Reading of 1.6
30/36= .833 so 30" is .833 Yards
So now we can use the equation .833 x 1000 / 1.6 = 520.6 Yards is the distance of the target
Now you can also use Mil dots to do hold over for when the target moves or for wind and elevation but that gets extremely complicated.
Parallax in Rifle Scopes is explained here
http://www.6mmbr.com/parallax.html
There are many books and websites to confirm what I've said here, but the best way is to go out to your range and talk to some long range shooters and show them your rifle/scope etc and get hands on help.
SOURCE: while sighting in rifle with new scope the cross
Is the scope moving in the mounts? Going back and forth, left and right? If so, tighten up the screws, Or are the stadia wires themselves spinning around inside the scope? That could be a problem. The wires are fixed in a tube that is mounted at the rear, the front is at the adj screws, they push back and forth on a spring, the whole tube moves, but it is not supposed to spin. You can get to this part easy enough, but go no farther than the cross hairs. Find out what they are supposed to be attached to, or just send the whole thing back and complain. If you break the seal, they will never honor the warranty if there is one. Hope this helps.
SOURCE: not a problem but need operation instruction for
I believe the second cross hair in your scope relates to an 18 inch dimension, or that of a deer. When you adj the wire to the body of a deer, it will be the distance, I'm not sure if you have to do the math, or the scope does it for you. Some scopes, you had to figure the hold over by the distance in the scope. others would be set to shoot at that distance. I would ave to look that one for you to be sure, but that is the idea. Hope this helps.
SOURCE: cross hairs sideways?!
If you are seeing an X you need to loosen the scope rings, re-level your scope and re-tighten the scope rings. 10-20 in/lbs on the ring screws, 15-30 in/lbs on the mounting screws. Typical configuration of the turrets is one on the top, one on the right side.
SOURCE: can you still use
I don't know what good it will be if the cross hairs are broken. You would be better off with iron sites. I would be looking at a new scope if I was you. Hope this helps.
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