Need help with Cooey Model 60

M

MOntario

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I picked up a Cooey Model 60 at an auction but when I got it home I realized there what no elevator for the rear sight adjustment. I decided to take it to the range and figured it would aim low but to my surprise it aims high, about 8 inches high at 50 yards.

Any suggestions on how I could adjust the iron sights? I don't want to have it drilled and tapped.

Thanks
 
An 8" change of impact @50 yds. requires change of.187" that is almost 3/16 " Take some measurements and report back.

My model 60 has a 21" sight radius. Front sight height of .335" A rear sight height of .335" they are level. The rear height was measured with the sight ramp removed.Hope this helps.All measurements were from top of barrel.


R
 
The front sight is 9/32" (0.281") up from the top of the barrel and it does not look like it was ground down or broken. The rear sight is 11/32" (0.344") up from the top of the barrel and I noticed that the blueing on it is much better than the rest of the rifle so I am wondering if it was replaced at some point in time. The front and rear sight are 20-3/4" appart.

If the rear sight was replaced I assume that my options would be to sand it down untill it reached the correct hight or find a replacement. Does anyone have any other ideas or suggestions as to what to do?

Thanks
 
MOntario said:
The front sight is 9/32" (0.281") up from the top of the barrel and it does not look like it was ground down or broken. The rear sight is 11/32" (0.344") up from the top of the barrel and I noticed that the blueing on it is much better than the rest of the rifle so I am wondering if it was replaced at some point in time. The front and rear sight are 20-3/4" appart.

If the rear sight was replaced I assume that my options would be to sand it down untill it reached the correct hight or find a replacement. Does anyone have any other ideas or suggestions as to what to do?

Thanks
Click to expand...
Judging from your measurments, without the thickness of the barrel at the point of measurement, it already looks like your rear sight is way high. it might not even be the stock sight. If you also take a measurement of the thickness of the barrel at the sights & divide those by two, you have the centre of the bore measurement. add those to your numbers (0.281"front" & 0.344 "rear") & you will get a clearer picture of the trajectory of your projectyle. Iceman is correct about a taller front sight... If one can be found. Another alteration could also include, in addition to the latter, filling down the notch of the rear blade sight as well as the top or the blade. Small corrections are recommended. This should help.
Good luck,
Moosifer
 
You have to file top of rear sight(shorten) as well as deepening the notch as the front sight is always or should be level with the top of rear sight when you draw a bead on target. Deepening notch only gives you a taller vision of front sight,do both.

R
 
ronnie01 said:
You have to file top of rear sight(shorten) as well as deepening the notch as the front sight is always or should be level with the top of rear sight when you draw a bead on target. Deepening notch only gives you a taller vision of front sight,do both.

R
Click to expand...

st13_1.jpg

Buckhorn or semi-buckhorn negates that theory.
 
I've since filed down the back sight and deepened the notch just above the specification of the tool on the browning website. It was really far off.

I'm going out shooting on Sunday and will see if it needs more adjustment.
 
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