10/22 scope is maxed but shooting low - need advice

Assuming that your base is symmetrical (NOT a +MOA base mounted backwards), and that it is not "shimmed" backward, and that the receiver hasn't been milled improperly, and assuming that your rings are the same height, there is a problem with your scope. You should not need anything special to shoot average 22LR ammo at 100m.

EDIT: unless your action has been messed with and you are getting early extraction, dropping pressures early.

You do have a serious height-over-bore excess, but your scope's vertical adjustment should account for that no problem. That's more about that base than it is about the rings, FYI.

I had a similar issue with a new Bushnell Banner scope (maxed out and still 4" low at 50m). That scope is currently being warrantied. I knew it was an issue with the scope because I was able to put a different scope on the exact same mounts and eliminate the problem.
 
Yeah, that makes sense. I will try another scope on the rifle if I am still having these issues and see what happens.

Thanks.

Luma

alpining said:
Assuming that your base is symmetrical (NOT a +MOA base mounted backwards), and that it is not "shimmed" backward, and that the receiver hasn't been milled improperly, and assuming that your rings are the same height, there is a problem with your scope. You should not need anything special to shoot average 22LR ammo at 100m.

EDIT: unless your action has been messed with and you are getting early extraction, dropping pressures early.

You do have a serious height-over-bore excess, but your scope's vertical adjustment should account for that no problem. That's more about that base than it is about the rings, FYI.

I had a similar issue with a new Bushnell Banner scope (maxed out and still 4" low at 50m). That scope is currently being warrantied. I knew it was an issue with the scope because I was able to put a different scope on the exact same mounts and eliminate the problem.
Click to expand...
 
If you still cant figure it out after trying it with med rings, then its hopeless, there is no way it will work, the gun is clearly a lemon, scope is knackered, and you should sell it... to me.
 
Hah! I just got it a week ago :)

I cleaned it up real good just in case, I switched the rings as the other rings had some cracks on seemed to not fit very well (pretty old), I am going to go try it out.

If it does not work, I will swap the scope and try that. if THAT don't work well not real sure what I will do at that point!

Apparently this scope has a lifetime warranty that is still honored to this day. But hopefully that is not the problem.

MarkJnK said:
If you still cant figure it out after trying it with med rings, then its hopeless, there is no way it will work, the gun is clearly a lemon, scope is knackered, and you should sell it... to me.
Click to expand...
 
Ahh, the barrel droop. Hate it when that happens! Easy fix, there are special bases made that compensate for that, the brand eludes me but it was on rimfirecentral. You can also cut small pieces of aluminum pop can and put a small piece on the bottom of the front scope ring and re-install the scope. Two pieces should bring you back on target. Couple layers of hockey tope in the same spot might work too.
 
your rings might be alittle high and or check to see if your turret has all bearings, i know it sounds funny, but a friend of mine couldn't hit nothing and we cranked her way up and way down and nothing. he took the turret off and it was missing a bearing. he put a bearing in and slapped it back together she adjusted properly and held zero.
 
upnorth said:
Ahh, the barrel droop. Hate it when that happens! Easy fix, there are special bases made that compensate for that, the brand eludes me but it was on rimfirecentral. You can also cut small pieces of aluminum pop can and put a small piece on the bottom of the front scope ring and re-install the scope. Two pieces should bring you back on target. Couple layers of hockey tope in the same spot might work too.
Click to expand...

Shimming the front rings will make it worse, not better. Try to look at it like this:

The gun shoots where it shoots, and always will. Scope adjustments moves the Point Of Aim (POA), not the Point Of Impact (POI). So in this case you need to move the POA lower until it intersects the POI, and to do that you need to shim the rear mount/ring, not the front. People really get confused on this stuff.
 
To the OP... Status update? Jethunter has actually hit the nail on the head. Shimming the rear (as I mentioned back in page 1) will move the crosshairs down so that you can match the crosshairs with the point of impact.
 
If you are going to shim, DO NOT put shims inside of ring, you are going to make the inside of the ring out of round-good way to #### up a scope.
Buy your-self some Burris Signature rings with some +10 & -10 inserts put the +10 Half in the bottom of the rear ring& -10 in upper half.
each,001" is an inch @ 100 yds ( 1 MOA)
If you think you need more elevation go for +.20 & - 20 and you'll be in business
 
The Burris ZEE offset rings are the simplest way to go but OTOH shimming first will confirm which rings you need prior to buying, and works on it's own if it's done properly.

Shimming is done under the base or in some cases between the ring and the base on weaver type mounts. Like BossHog2 says - don't shim in the ring itself or you risk screwing up your scope.
 
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