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-   -   Scope height above bore (http://www.firearmstalk.com/forums/f65/scope-height-above-bore-66871/)

dan01 06-21-2012 11:26 PM

Scope height above bore
 
1 Attachment(s)
I have a Umarex Colt (Walther) C 4 22 cal with a NcStar 3 to 9x scope mounted on the carry handle....The center line of the scope is approx. 4 1/2 inches above the center line of the bore........I want to keep this appearance and still have reasonable accuracy from 25 to 100 yards.........................Any comments would be appreciated as to zeroing this scope to the rifle.

W. C. Quantrill 06-21-2012 11:39 PM

I think you will be ok after you get out to 100, but as high as that scope is, I dont see any way you can have 25 AND 100 in the formula.

My DPMS A-15 sets a lot lower, but it will shoot low at 50. Not bad, but some. After we get out to 100, then its ok.

http://www.hunt101.com/data/500/medium/002455.JPG

Sniper03 06-21-2012 11:50 PM

1 Attachment(s)
Dan,

To be zeroed at 100 yards with the scope that high you are going to be hitting about 4 inches low at 25 yards. This because of the Line of Sight and the Line of the Bore. If that is what you want is a 100 yard zero which I would recommend, you will just have to hold for anything closer in. I know you seem to like the looks of it. Another issue with it being that high is accuracy since a good stock weld (Cheek position on the stock) is not hardly possible. Another consideration when you have the system like you have is tactical. If you ever have to shoot over cover your head is going to have to be way above the scope and the cover used to see through the scope. This creating a dangerous exposure situation should someone be shooting at you. You may want to change the set up someday in the future. And if you do some of us here will be glad to assist with explaining and walk you through it.

03

JTJ 06-21-2012 11:56 PM

Quote:

Originally Posted by W. C. Quantrill (Post 844777)
I think you will be ok after you get out to 100, but as high as that scope is, I dont see any way you can have 25 AND 100 in the formula.

My DPMS A-15 sets a lot lower, but it will shoot low at 50. Not bad, but some. After we get out to 100, then its ok.

http://www.hunt101.com/data/500/medium/002455.JPG

Either you have very long arms or your mount is on backwards.:eek:

dan01 06-22-2012 12:55 AM

"Either you have very long arms or your mount is on backwards"...JTJ, Everything is mounted correctly.........I have seen a lot of military 5.56 AR 15s and C 4s with scopes or other sight devices mounted on top of the carrying handle in combat situations................................Before I got the 22 cal AR style rifle I had "some experience" with M 16s with the iron sights on the carry handle (late 1960s).....No scopes back then.

I want to keep the carry handle on my 22 cal C 4 to the point that if I can't make the scope work, I will just use the iron sights as I want to shoot at 25 to 50 yards also.

By the way, I have a GSG AK 47 22 cal with a red/green dot scope mounted on the side mount and the scope is 3 1/2 inches above the c/l of the bore.....It is reasonably accurate at 25 to 50 yards and If I hold about 5 inches above at 100 yards it doesn't shoot bad at all.

I probably want too much with the scope arrangements I have.......I thank each of you for responding...

Dan

W. C. Quantrill 06-22-2012 12:58 AM

The mount is on backwards in this picture. I got a good deal on this rifle, it was a patrol rifle. A-15, and the guy couldnt get attached to it and he offered it several times in the local classifieds. I finally called him and ended up getting the rifle, case, extra magazines, scope and 400 rounds of green tip ammo for $700. I brought it home and thought,,,this sucks, then studied it and saw that mount was backwards, and turned it around, now it works just fine. I put a magpul ring on it and use a Magpul single point sling on it now. Turning that mount around moved that scope up to even with the back of the receiver. Apparently, they dont teach this in cop school. I might add, that in this state, Face to Face transactions require no paperwork, and no taxes. Good deal.

JTJ 06-22-2012 02:34 AM

Quote:

Originally Posted by dan01 (Post 844855)
"Either you have very long arms or your mount is on backwards"...JTJ, Everything is mounted correctly.........I have seen a lot of military 5.56 AR 15s and C 4s with scopes or other sight devices mounted on top of the carrying handle in combat situations................................Before I got the 22 cal AR style rifle I had "some experience" with M 16s with the iron sights on the carry handle (late 1960s).....No scopes back then.

I want to keep the carry handle on my 22 cal C 4 to the point that if I can't make the scope work, I will just use the iron sights as I want to shoot at 25 to 50 yards also.

By the way, I have a GSG AK 47 22 cal with a red/green dot scope mounted on the side mount and the scope is 3 1/2 inches above the c/l of the bore.....It is reasonably accurate at 25 to 50 yards and If I hold about 5 inches above at 100 yards it doesn't shoot bad at all.

I probably want too much with the scope arrangements I have.......I thank each of you for responding...

Dan

I was referring to Quantrill's rifle. The guy he bought it from put the mount on backwards.


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