scope problems

[eagle52]

I recently purchased a remington 700 .308 with a bull barrel. It was mounted with a pentax 8.5-32 lightseeker scope with a 50 mm objective lens. I took it to the range and attempted to sight it in but very quickly ran out of vertical adjustment 9i.e. the vertical was adjusted all to way UP). The bullet impact, at 100 yds, was still about 3" below the crosshairs. Windage was fine as the scope mounts are of the leupold style with the 90 degree lock=in dove-tail on th eforward mount and the two adjustment screws on the rear mount. I've read several threads concerning various mounts and scopes, but none with my particulars. Any help will be greatly appreciated.

 

[chuwee81]

i think the same thing happened with my friend's AR. He over tightened the front mount and didn't tighten the rear enough. The scope ended up pointing down, so no matter what, the bullet impact is 7" above for 50 yds and he ran out of elevation adjustment like that.

So he gave it to me to have a look at it (i scoped my 10/22 with 3 different scopes). Sure enough, i found out why and started installing the mount carefully (base first, make sure it's straight and at the same torque), then the rings. After doing so, i did the ol' bore/ scope alignment at 10-15 yds (dining room to TV ) and the first shot is on paper. After that, just needed some minor adjustments.

So yea, double check your mount and the ring torque, make sure they're even. You might have tightened the rear too much.

Just my .02, could be something else.

 

[nicholst55]

Order some scope mount shims from Brownells (or somewhere) and place one under the front mount. That should take care of it.

You don't have a 'long range' mount, do you? One of them +20 MOA things? That would easily cause your problem all by itself.

 

[rangerruck]

first thing to do , is put front mount in the rear, and vice versa, and see what happens. then if still no worky, try them front to back, back to front, one at a time, but rotating them 180 degrees, just one at a time. if still no worky after all of that, then either get new mounts, or get shims. I bet changing them front to back gets them to work though.

 

[Uncle Mike]

first thing to do , is put front mount in the rear, and vice versa, and see what happens. then if still no worky, try them front to back, back to front, one at a time, but rotating them 180 degrees, just one at a time. if still no worky after all of that, then either get new mounts, or get shims. I bet changing them front to back gets them to work though

.

Yep... this will often solve the problem.

Remember to add shims UNDER the BASE and NOT in the rings themselves.

Here is a shim guide chart... http://charliedatuna.com/Airgun%20Info.htm

 

[Kingcreek]

I shimmed a scope base with a strip of aluminum cut from an Old Milwaukee can 20 years ago. it is still in there and working just fine.

 

[dakotasin]

Order some scope mount shims from Brownells (or somewhere) and place one under the front mount. That should take care of it.

was my suggestion as well, but submit the rear base is where it goes, and old mil shims work great, easy to come by,and easy to cut to fit...

 

[Dr. Tad Hussein Winslow]

shims from Brownells (or somewhere) and place one under the front mount. That should take care of it.

If by "take care of it", you mean "make it shoot 'even MORE too low' than it already is", then yes. You would shim the rear mount for this problem. But shimming is a last resort, since it makes your scope angle in the rings jacked up and can potentially damage your scope tube/scope. There's usually something wrong in this situation. Yes, I'd try switching front and back first, and re-mounting. This should NOT happen. I'd also call the scope manufacturer, and make sure I was using quality rings from a reputable manufacturer (matched of course appropriately to the rifle).

 

[Uncle Mike]

Hey eagle... is that Remington a newer one or is it more than 7-8yrs old...?

We see a LOT of receiver variation front and rear with the newer Remingtons.

If you shim, you can use Burris Signature rings with the inserts to lessen the scope tube damage... but this isn't the best idea out there.

As Tad says, there is a glitch in the system...check that everything is to spec, call the manufacturers and get your information.

Oh yea...shim the REAR... If you decide to shim.lol

Make sure your action screws are tightened correctly, this is a must do with a Remington, any variation in torque of the action screws will cause problems.
Is the barrel clean or fouled...? Has the groups settled down...?

Were you wearing a blue hat and red cowboy boots...? lol hehehe