Information on an old Tasco scope

C

catmech

Member
I acquired a Tasco 4-16x40 scope in a trade with no instructions with it.It looks like it has some sort of range finding system,on the power ring it has a window with
animal names next to it and what I'm pretty sure is yardage
numbers in the window.It has 7 different rings that fit on the elevation turret marked A-G and 100-500.It has 2 horizontal cross hairs.I tried searching for information
but couldn't find anything on how to use this system,does anybody have any information? TIA
 
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You have one of the last Japanese made Tasco's, before they became
"Trashco's". I got one new and have been happy with it. The only
negative found with the scope itself is that the cross hairs become
hard to see in low light situations.

As for the range finding rings, IIRC, each was for a different size
animal. While looking through the scope and adjusting the power until
the top and bottom of the target was just between the X-hairs, the ring
would then give the distance. I thought that function was too much of
a hassle to use, especially when the Tactical 20 it is mounted on
shoots like a laser to any yardage I've needed.

Wish I could be more of a help, and this info may not be totally
accurate, but it's close.
 
I have one just like that bought it new back in 1992, put on a custom built 264 WIN Mag for Western big game hunting, killed elk and mule deer in 1992-93 an 96 and a few whitetail here in PA. A buddy and I each bought one, they do work, the rings are for different bullet grain. It works like DannoBoon said, you dial the magnification up until the animal is between the 2 lines then look at the number in the little window on the ring and turn the elevation knob to the yardage that it calls for. That thing worked pretty good I shot 2 mule deer at a little over 450 yards, that's what the dial up said set the elevation and held right on killed both times with 1 shot.
 
I have a couple of those TR (trajectory/rangefinder) scopes and had a couple of others. The different turret caps are for different calibers and the different trajectories and need to be matched to the trajectory of the caliber being used. All of mine have a line below the crosshair, you bracket the targeted animal between that line and the crosshair by adjusting the power which will then show the yardage in a small window, after doing that you turn the turret cap to that yardage and take the shot.
I have a Tasco 4x12 TR on a 22-250 that is sighted in at 100yds, if a groundhog is @ 400 yds. I can adjust the turret to 400 yds. and put a bullet in it's head, done that more than once at 300-400 yds.
Just a heads up, when one of my Tasco 3x9 TR's finally crapped out on me I found out they can no longer be repaired, almost cried! The ones I have/had were all made in Japan and were flawless for probably 40 yrs. hunting in all conditions, IMO they were excellent scopes.
Hope this helps.
 
I thought it might be some thing like that with the double cross hairs.Can any one tell me which turret cap is what caliber or bullet weight?
 
I don't think I can help you on that, I have the range drum selection table in front of me for the 3x9 and the 4x12, it only shows range drum's A, B, and C for the 4x12, and range drums A, B, C, D, E, F, and G for the 3x9, that tells me that you need a scope specific range drum selection table for the 6x18 because of the difference in magnification.
I'm pretty sure I had a 6x18 TR that I sold to a buddy years ago, he may have the box to it with the drum selection table, I'll check with him.
Here's another thing, if you plan on putting it on a caliber that wasn't made at the time, you may need to try to match the range drum with another caliber with similar ballistics.
 
Originally Posted By: SixsixtyMagsI don't think I can help you on that, I have the range drum selection table in front of me for the 3x9 and the 4x12, it only shows range drum's A, B, and C for the 4x12, and range drums A, B, C, D, E, F, and G for the 3x9, that tells me that you need a scope specific range drum selection table for the 6x18 because of the difference in magnification.
I'm pretty sure I had a 6x18 TR that I sold to a buddy years ago, he may have the box to it with the drum selection table, I'll check with him.
Here's another thing, if you plan on putting it on a caliber that wasn't made at the time, you may need to try to match the range drum with another caliber with similar ballistics.
It will be on either a .223 or .308,are any of the drums for those and if they are are they the same
letter for both scopes?I'll probably put it on the .223
 
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Those charts go by bullet weight and even the type of bullet, for the most part they don't show the same letter and a lot of bullet weights aren't listed. Most .223 & .308 are either A, B, or C, all you can do is experiment without the drum selection for that particular scope.
Just got a call, my buddy sold the scope, so that option is gone.
 
Originally Posted By: SixsixtyMagsThose charts go by bullet weight and even the type of bullet, for the most part they don't show the same letter and a lot of bullet weights aren't listed. Most .223 & .308 are either A, B, or C, all you can do is experiment without the drum selection for that particular scope.
Just got a call, my buddy sold the scope, so that option is gone. Thanks for the help it
has the B drum on it so I'll try that on the 223 and see what it does.
 
According to the chart that I have the A drum is for 223 55gr bullet weight, that's the original chart that came with the 4-16X40 scope, I have all the range drums A thru G for this scope.
 
Originally Posted By: StrobleAccording to the chart that I have the A drum is for 223 55gr bullet weight, that's the original chart that came with the 4-16X40 scope, I have all the range drums A thru G for this scope.
Thanks for the help.
 
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