New 10-22 and scope. shoots waayyyy low


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Sullyman
May 30, 2009, 07:33 PM
Just got out with my new 10-22. Had the local gunshop mount a Simmons scope. Took it out today and fire a couple hundred thru it. After much adjusting I got the windage within reason, 1/2 inch at 25 feet leaning against a tree. Still need alot of work however. Just trying to get it on the paper to start. The problem is elevation. I was hitting about 4 inches low from the aim point at 25 feet, fully adjusted to the max. No more MOA adjustments left. 4 inches at 25 feet, well let's just say at 100 yards I'd be skimming the dirt well in front of the target, sort of like my golf game.

Never having mounted a scope before does anyone have any suggestions that would get me to the point where MOA adjusted are all that is needed? I couldn't find the installation instructions that came with the scope.

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DRYHUMOR
May 30, 2009, 07:57 PM
You might try different mounts, or shimming the ones you have now.

rocinante
May 30, 2009, 09:43 PM
That is one thing I like my russian kobra red dot. Infinite adjust ability.

PT1911
May 30, 2009, 09:51 PM
what sort of mounts are you using? if they are the see through high rise mounts that could be the problem...

hunter25
May 30, 2009, 09:56 PM
Mine did the same thing. I thought it was the scope at first and tried another one with the same results. I just cut a piece of plastic off the package that the rings came in and trimmed it to fit in the bottom of the back ring to shim it up. Worked great and on target now.

lykoris
May 30, 2009, 10:04 PM
there is a simple solution you can perform although you run the risk of bending your scope tube if you over tighten your rings....so be very careful

obtain shim material, film negative or side of a coke can and cut into strips.

in your case place 1 piece on the rear mount rings before you attach the scope, be careful not to go torque on mode when attaching the rings.

should bring you up in elevation, if not add two pieces of shim material and so on and so forth.

PT1911
May 30, 2009, 10:06 PM
shims only angle the scope down toward the bore and, although they can be effective a lower set of rings is a little less, shall we say "engineered." Especially with a short range gun such as a .22lr the closer the scope is to the bore the better your accuracy will be...

you have to think in terms of the arch that the bullet takes on its path from the barrel. it starts up out of the barrel, reaches an apex at whatever your true zero is and then works its way back down in a smooth arch.

If you are using high rings, the trajectory of the bullet is unable to overcome the rise of the scope at such a short distance as 25 ft..

(even with low rings 25ft is damn close that is only 8 yards)


You would probably be surprised to see that out to 25-50 yards you would probably be able to zero easily with your scope's adjustments...

Do not, I repeat... DO NOT shim if you do not have to.. it can likely be avoided.

JDGray
May 30, 2009, 10:23 PM
Yeah, back up to 50yrds, bag the rifle, and try again. A scope with 4 clicks=1" at 100yrds, would be 40 clicks=1" at 10yrds:eek:

Kernel
May 31, 2009, 12:49 AM
Sounds to easy, but sometimes you can fix this problem by simply swapping the front ring and the back ring. I'd try it before shimming, anyway. Might be all that's needed. Maybe one's slightly higher than the the other, and you now have the shorter one in front. Also, like PT1911 said, 25 ft is way to close to sight in a scoped rifle. Even a lowly .22. Move that target back a ways.

Dallas Jack
May 31, 2009, 05:47 AM
Since you paid to have the scope mounted take it back and describe the problem to them. They should fix it for you.
Dallas Jack

Dallas Jack
June 1, 2009, 05:50 AM
Sorry for the delay I had to find a thread. This is the most likely cause of your problem.

http://www.rimfirecentral.com/forums/showthread.php?t=251033&highlight=bump+on+reciever

Hope this helps.

Dallas Jack

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