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AR15.COM
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1/1/2005 5:29:10 PM EDT
If anyone could help me with this it would be wonderful, I got my ar15 (bushmaster) together bought the upper and lower, went with the flat top, everything went together just fine, Today i went out and bought a Nikon Monarch ucc 6.5x20x44, got the scope on went out to sight it in and i could not get the adjustments to go low enough, with them cranked down all the way it is still shooting about 10in too high at 50 yards, so then i started shimming, and even with a ridiculous amount of shimming it is just barely where it needs to be. The upper i bought came with two scope blocks on the rail, just like the Varminter, could this be offsetting the scope to high? i dont see how this is posssible because that is what they are designed for! also the rings i am using are medium hight, nothing too tall, if anyone has any suggestions i would greatly appreciate it, if not i am going to take the scope back tomorrow and try a different model(fingers crossed of course)....
1/1/2005 5:46:48 PM EDT
[#1]
I wonder if it is a ring related problem. If you swapped the rings back to front I wonder if it'd move the rounds the opposite direction. I'd start there.
1/1/2005 5:57:43 PM EDT
[#2]
thanks for the info, but i took the rings off and measured them my friend has a measuring tool i think it is called a mic? anyway they were exactly the same, bummer i know!!
1/1/2005 6:04:33 PM EDT
[#3]
So, how far is the objective above the bbl?


The upper i bought came with two scope blocks on the rail


Are there internal adjustement inside the vert/horiz turrents?


i could not get the adjustments to go low enough, with them cranked down all the way it is still shooting about 10in too high at 50 yards
1/1/2005 6:08:01 PM EDT
[#4]
the objective is about 1.5 to 2 inches above the barrel, sorry i cant be more precise, i have already taken it back off, i went with the medium rings because of the 44mm objective, it is less than 2 inches for shure, i have almost an identical setup on another rifle and it is fine, i think it might be the scope, i have always had good luck with Nikon mabey this is just a bad one?
1/1/2005 6:10:01 PM EDT
[#5]
oh as for the internal adjustmens i dont think so, i know you can change the nobs but that is about all i know, nikon isnt much on directions, it basically read*** here is your scope have fun!!!
1/1/2005 6:44:34 PM EDT
[#6]
Are the Turrents hunter style(low) or they varmint/marksman(tall). I haven't dealt with Nikon scopes before but I had a simular issue with my Redfield 6.5x24. If they are the tall turrents, there is a possibility there is an internal adjustment screw under the turrent cap which allows for initial roughing in.
other than that I dunno, Nikon ususaly has good QC on their optic. Good luck
1/1/2005 8:03:23 PM EDT
[#7]
soowah thanks again i just looked under the cap and there is nothing in the way of an adjustment screw, i think i am going to have to take it back and get another one just so i can have a control group. if the new one still does the same thing then i am going to have to try other directions, hopefully it is just a bad scope, thanks again!
1/2/2005 10:15:28 PM EDT
[#8]
well i think i have figured out the problem........the NIkon scope that i purchased only had 38 minutes of internal adjustment, later looking at all there scopes this one has the least amount, the most being 170, and the average being 50, i believe that with the ar15 mounting blocks on the rail+the scope mounts it made the scope to high. Due to the fact that the scope only has 38 minutes of internal adjustment it used up all of the adjustment compensating for its height! Thus making it impossible to zero in...Now the only thing i am wondering is why a 500 dollar scope only has 38 minutes when their 250 dollar scope has 150 minutes? quite the quagmire if you ask me.........
1/3/2005 4:03:43 PM EDT
[#9]
I have a RRA varmint upper with a burris 6x-24x-44mm scope and had no trouble sighting in at 100 yds even though the boresighter used barely showed in the scope. I used a $70 set of Warne maxima tactical series steel rings. they're heavy and made like a tank. They are quick detach for weaver or picatinny rail and are listed as ultra high 50-56mm bells. My scope  clearance from my forearm is only .335" without the riser blocks you mentioned. Seems to be a solid mount giving .67" 3 shot groups @100yds.
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