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Posted: 4/12/2015 7:44:12 PM EDT
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So here's the deal. I just picked up a new rifle from Dark Storm industries. They're a local company on Long Island. I got a set of MBUS pro sights to put on it, had it out to the range for first session. The gun runs flawlessly. I was having some SERIOUS issues getting it to zero. So first understand, on Long Island, the only ranges we have, the closest distance is 50 yards. Otherwise I'd just pull it in closer and figure it out. On top of that, they run a cease fire every 30 minutes. I didn't have a spotting scope or binoculars. So, after running the suggested break in period, I start trying to sight it in. I'm shooting off a bench, and I've shot rifleman at the appleseed shoots, so I don't THINK it's me. I'm shooting at the shoot and see targets.
So, I fire 10 rounds, wait 25 minutes for them to call cease fire, go check my target. No hits. So I'm not sure where to start adjusting. So I bring the front sight about 8 clicks to the left, opposite of the arrow pointing UP, and bring the rear sight left(opposite direction of the arrow marked right) about 6 clicks. 10 more rounds, wait 25 minutes, check the target, no hits. Do the same thing- 8 clicks on the front, 6 clicks on the rear. I tried firing rounds right into the berm, seeing if I could figure out where the rounds were hitting, but everything was wet and there was no dust cloud when the rounds hit the berm. So, after I get about 30 or 40 clicks on the front sight, I finally see I hit the BOTTOM target in the lower right corner. (I had set up 2 targets after my 3rd check, figuring maybe I would have more surface area to see where they were hitting) I was able to then get the windage adjusted so the rounds were hitting the bullseye, but they were hitting center circle on the bottom target, when I"m aiming at the top. Eventually I ran out of time and had to leave, frustrated that I spent all that time and ammo and leave without a proper zero. So here's where the issue is. I realize when I get home, duh, if the shots are hitting low, I should be turning the front sight the opposite way, towards the arrow marked up. So I start fiddling with it, keeping track of my clicks, and it seems that I may have extended the sight to its limit, and no matter how many clicks I turn it, the sight doesn't lower. (the direction I was clicking for the zero was bringing the sight post higher and higher). What did I do here? |
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Ever bore sight one? I've got a sightvise I put the upper in then put the bore on the target. Adjust the sights to the bullseye and keep rechecking the target is centered in the bore. When everything is lined up the first shot is usually damned close. Fine tune from there.
Can't help on the sight issue. I assume you screwed it out (up) as far as it would go. Try pressing the detent with something and screwing it in while holding pressure down on the sight post? |
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Quoted:
You might need a gas block height front sight. I'd have to see your rifle to tell you for sure, but if your rifle does need a gas block height front sight, then a front MBUS won't work. Or you could put a small riser on the block to bring the front sight base/block on the same plane as the rail. |
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I'd talk to my seller first and foremost but if you're dead set on troubleshooting it yourself I'd ensure the barrel nut is torqued to spec. I had an upper that wasn't and it made it shoot all kinds of goofy.
If that is all good I'd try alternating shooting rounds at the bottom, top, left & right edges of the paper. Example: first window shoot at the upper edge of the paper, wait until cease fire and check for point of impact. if none can be found come back and fire ten at the bottom edge of the paper, and so on and so forth. This way if you're just off the paper you'll know which direction. If you can't get it on the paper after that i'd say something is out of spec. Also, take someone with you as they can spot your POI better than the shooter. |
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I'm not quite sure I am following what you are saying about making adjustments, but if you are shooting low, you should be turning the front sight so it goes lower, causing you to raise the muzzle of the rifle, causing you to shoot higher. I don't care which way the arrows point or what they say. If I am shooting low, I rotate front sights to the right as I am looking down at them, which screws them in and lowers them, raising my point of impact. As far as I know, all front sights are lefty loosey righty tighty, just like any standard threaded device.
As far as the sight not adjusting, as was already mentioned, it sounds like you need to align and keep pressure on the front sight tip, as you turn the adjusting wheel. You probably ran it out of full adjustment, and the threads have basically "skipped their track" so to speak. You just need to get everything aligned and started so the wheel starts back onto the threads. |
| thanks for the help. I was able to get the front sight to screw in further. I think what happened, when the sights were first on, it must've been shooting either high or middle and right. I kept adjusting them down and left, which is why I eventually saw rounds hitting the bottom left. Stupid brain fart moment, as soon as I saw that, and got the windage adjusted properly, I should've started rotating the front sight the other way, for some stupid reason I kept turing it the same way, until it wouldn't turn anymore. Well. Back to the range now for a better zeroing session. |
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