I have a tasco 3x9x50 world class rifle scope. The scope caps are stuck to the adjustment screws in top and side of scope. I am unable to unscrew the caps without unscrewing the adjustments as well. The scope has some numbers in the eye piece which ar as follows:R-DWC3-9x50. Also BC13 9803 as well. I love this scope and would continue to use it. I understood that when I bought it that it carries a lifetime warranty. Please help Alan Baughman

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: i have a tasco 4x32 rifle scope and the cross

you dont fix a tasco scope there so cheep you just throw them away,, and buy a new one,,,sorry but thats the way it is with tasco

SOURCE: PARTS FOR A TASCO RIFLE SCOPE

I need an adjustment cap for a Tasco Golden Antler 3x9. Where or how do I get one.

SOURCE: tasco scope

Sight in rifle.Put top(elevation)cap back on with the"0" facing back.Be careful not to make it "click"as this will change point of impact.The way this works is you aim at animal and adjust the power(3-9)until the animal's body is between the 2 lines.Look in the little window on eyepiece to see distance of selected animal.Then click top knob to the correct distance(200,300,etc.)This should raise bullet impact for that distance.I've had this scope on a .270 since 1980 and never used this feature.(I only bought it because the scope was on sale)