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Posted: 7/21/2007 7:31:50 PM EDT
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(Also posted in Hometown => Washington forums) So I finally got another chance to take the AR-10 out to sight in the scope. Needless to say, I was hoping for an easy time. Not so. The thing seems to be shooting relatively straight (not much left/right spread other than user error) but it's shooting *really* low. I'm not talking like, three or four inches low, I mean that most of my shots clipped the bottom of the target if they hit (that would be a little over a foot low, if I remember correctly.) Everything seemed to be mounted pretty tight - the ARMS scope mount is rock solid, ARMS rail isn't shaking... I had originally thought it was the bipod shaking around or something, so I took it off and had the rifle perched on a benchrest - minor difference. For the record, the first 20 rounds were Federal Gold Medal Match, the next ten were HSM Match Grade. I know I'm not yet good enough to get 1MOA groups at 100y on my own, but by the same token, I'm not completely incompetent. After being more than slightly frustrated with the sighting issues, I took the Colt 6721 for a trial run with irons and was shooting ~3-4MOA groups at 100y (on the target  )...Here's the equipment list - Armalite AR-10 with stainless steel barrel & national match trigger ARMS SIR #53 Trijicon ACOG TA55A 5.5x50 with BAC ARMS #19 Throw Lever Mount for Trijicon ACOG Command Arms UPG Grip Command Arms SRS Stock Harris Bipod I know there's the option to adjust the scope, but I really don't think I should have to adjust the scope ~40 clicks up. Hell, I think the scope would break before that happened, if not max out way before then. Thoughts/comments/suggestions? |
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Did you bore sight the scope first, or did you just mount it? It may mean that you need to get a mount that is tapered or has rings of different heights; the rings need to be able to accommodate for the angle. Is the scope adjusted to the center of movement? In other words, do you have the same number of clicks up as you do down? |
| I'm not sure I understand your question. Are you expecting to mount you scope and be able to hit accurately without adjusting your turrets? Being a foot off at 100 yards isn't that much. You're lucky to be on paper without bore sighting at that range. Start off dialing in your scope at 25 yards, about an inch low. Then move back to 100 yards and make any needed adjustments for your desired point of impact at that range (usually an inch high). Then raise your expectations. Your rig should be able to shoot 1 MOA. |
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