CVA MTN Rifle rear sight

[mastadonald]

I have heard there is "no such thing as a dumb question" but I'll test that theory here. I am trying to raise the rb point of impact by raising the rear sight on a CVA Mtn Rifle. Do I turn the screw clockwise or counter-clockwise? What does one turn of the screw equal on paper? Thanks in advance!

 

[mooman76]

I don't know for sure but pretty sure it is clockwise. You should be able to see it rise when you turn the screw. As far as how much, it's kind of a try and see thing. Turn a little and see where you are at, shoot some more. It's all part of the fun.

 

[rafterob]

Clockwise to raise POI. But you should sight the rifle in at 25 yards with the rear sight down. If it is shooting low there, file the front sight down to gain your POI. Then use the elevation screw to maintain POI at longer distances. I shoot 65 gr. ffg and a .495 ball with .018 patch. That shoots flat at 25 and 50 yards. I add 1/2 clockwise turn to the rear sight to keep it on at 100 yards. That makes up about a 4" drop. That is with my Mtn. rifle and my load. You will really need to do your own experimenting to see what works for you. Adjustable sights can really screw you up more than they can help. I think it is better to learn the appropriate sight holds for varying distances. That will serve one better in real-life shooting scenarios. I only use the sight adjustment when shooting paper targets at the range for competition.

 

[VEARL]

Raise it and shoot it. See where you have gained in POI.
If you are shooting at 50 yds the amount raised on the rear sight will still be a little low at 75 yds.
Best just to get a tight group, then start raising the rear sight to get you in the 10 ring at 75 or 100 yds.

 

[rafterob]

Yep, right around 75-80 yards is where I start to see some drop with mine.

 

[Kentuckywindage]

turn it clockwise in order to adjust the POI upward.

 

[PeteDavis]

To arrive at your rear or front sight correction, measure the desired change at the target in inches.
Then measure the sight radius in inches.
Multiply thos numbers together.
Then divide that figure by the distance to the target in inches.
That will give you your poi correction in thousanths. Sounds crazy but it works, every time. You would need a caliper.

PD

 

[rafterob]

Or you could just turn the screw and see where it hits :blah:

 

[azmntman]

ya, few extra balls worth it vs the math at the range! :youcrazy:

 

[PeteDavis]

Do the correction and save your balls.

 

[azmntman]

CUP vs calculator here :rotf:

 

[PeteDavis]

Pythagoras vs Davey C?