Scope - 1/8 MOA vs Fine Crosshair ?

R

RegisG

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Would someone explain the difference between a scope with 1/8 MOA DOT vs Fine Crosshair Dot? For 50yd benchrest.

Thanks,
Regis....still lots to learn after 50 yr shooting.
 
I prefer the fine crosshairs as I think I can hold more precisely, if you have good eyes. However my eyes are not those of a young man so I have switched to the 1/8 minute dot so I can better see what I'm aiming at. It was getting difficult to find the cross hairs quickly and after a few times of there not being where I thought they were I had my Leupold changed from fine crosshairs to the Leupold dot.
If your question just meant what are they, The 1/8 minute dot is a small dot placed at the intersection of the horizontal and vertical crosshairs. A 1/8 minute dot covers a .22 bullet hole at 50 yards.
 
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Rich,
Thank you for clarification. My eyes can use all the help I can get. I rather like the idea of centering .22 cal dot on ARA targer.....I think I'll try it.

Thanks
 
Excuse me but.

A 1/8 min dot is 1/16 inch at 50 yards or 0.0625 inch. A .22 cal bullet hole is about .22 wide, no? Thus a 1/8 minute dot on a scope will be more than 3 times smaller than the hole in the target at 50 yards. .0625 x 3.5 =.219, still smaller than the bullet hole. Or am I missing something all these years? My 1/8 min dot on my Weaver T-24 does not cover a hole at 50 yards. bob finger
 
Dot size

Maybe I'm confused.
First the dot size is determined at the 100yd line, not 50yd. A 1/8 min dot covers 1/8" at 100 yards or less than the size of a .22 hole.
However, at 50 yds the dot will appear larger, not smaller. The 22 hole remains the same as does the 1/8 min. dot, but it now covers 1/4", slightly larger than a .22 hole. If the dot covers 1/8" at 100yd it can't cover less at 50.
Since reticles are figured at approx. 100yd its easy to be confused.

bjm
 
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Do we need a geometry lesson here?? Minutes means minutes of angle. The apex is at the scope and the distance between the legs of the triangle get further apart as you go down range to 1/8th inch at 100 yds (aprox). You can work back to 50.
 
I found the Leupold dot to be to big for me. I had a 1/16 minute dot installed. It's just barely a bump in the crosshairs, but I like it.
 
So Brian it covers 1/4" at 50, 1/2" at 25, 1" at 12 1/2, 2" at 6 yards. Try it. I don't think so. The opposite affect would be covering 1/64" at 800 yards. I don't believe that!
 
This wouldn't be the first time I've been wrong. But I have what's called the Leupold dot, installed by Leupold. The cross hairs are thicker at the edges and taper to a fine cross hairs at the center. where they intersect there is a 1/8 minute dot. That's what Leupold calls it and I will go with them until their proven wrong (not me). Anyhow it covers a .22 bullet hole at 50 yards more or less. I'm sticking to that whether I'm right or wrong.:p Rich
 
Rich,

I had a Leupold dot. If you check closely, I think you will see that you can easily see the outer perimeter of the bullet hole if you center the dot in the hole.
 
Well....

I have old(er) eyes too and the 1/8 minute dot on my Weavers is just fine for 50 yd BR shooting. I can easily hold at various points WITHIN the 10 ring (.25"). A smaller dot would be very easy to lose and 1/8 min. dot doesn't subtend enough to obscure anything.
 
hi ho regisg,

it's like most everyone said, it's all in the eyes.. i have outgrown thin cross hairs and have gone to the leupold dot. won't say how much it covers at 50yds.:D. don't want to get in that..

..ttfn..grampa..
 
This just proves a point that I have suspected. If we stay at benchrest long enough, we will loose perspective and not know what we are seeing or something like that.:)

Concho Bill
 
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WHEN LOOKING THRU THE SCOPE _The dot does not change size. WHEN LOOKING THRU THE SCOPE -Its the same at 50 or 800 yards. WHEN LOOKING THRU THE SCOPE - the bullet hole is much bigger at 50 yds. than at 800. Thus the dot does appear smaller at closer ranges - WHEN LOOKING THRU THE SCOPE. I'm not sure if you can say its 1/16 at 50 or even put an exact size on it.

I hope you can understand it now - DON.
 
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ROTFLMAO...is that due to the choke of the air presure? Maybe friction burning the bullet down to a smaller caliber.
 
1st or 2nd focal plane

Recticle ? If the scope is American made (usually) the rectical substentions are measured in MOA at 100 yds (or fractions thereof). Example for a fixed power scope 1/8 MOA dot substends approx. .125 " @ 100 yds ,at 50yds. it would substend approx .06 " or 1/16 ",now at 200 it would be 1/4 moa, at 400yds. it would be at 1/2 moa, at 800yds. 1 Moa.You can check the Manufacturers specs on their web sights .Burris lists theirs at High and Low magnifications.. have fun:D:D BTW a Variable power scope will actually have multiple DOT sizes depending on the magnifcation setting used.(smallest dot @ highest Mag. largest dot @ lowest Mag.)
 
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You were good up to 200yds. After that you're reference to moa is incorrect. Change the moa to inches and you're good.
 
234rick said:
I'm not sure if you can say its 1/16 at 50 or even put an exact size on it.
Click to expand...

I'm not sure you can say it's 1/16" at 50 yards either, but you can put an exact size on it. It's not infinite or variable, it's fixed. Anyway, 1/16" is close.
 
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