scope adjustment problem

hadjii

I have a Springfield 1st gen scope on my DPMS 308, while sighting it in the other day i ran out of left windage adjustment. The scope is mounted with Tasco weaver-style rings. Could the rings be that far out of wack? Or, could there be a problem with the scope? I've heard Springfield had problems with this model. Any help much apprecatied.

hadjii

OK, so I've never had this happen before. The rifle is a Marlin X7VH in 223. The scope is a Bushnell Legend Ultra in 4.5-14.The rifle is a proven sub-moa rife with a different scope. The scope is a proven sub-moa scope on a different rifle. The reason I swapped out scopes is because this long Bushnell scope just didn't look right on my Ruger Hawkeye in 257 Roberts. So, I mounted this scope on this rifle yesterday. Went out this morning to sight in, and at 40 yards, using hornady factory loaded, 55 grain ammo, I completely ran out of elevation adjustment. With elevation maxxed out, POI was still about 6" low. The reason I was shooting 40 yards is because I wanted to make sure I was on paper before I moved out farther. Not quite sure how to proceded because I've never had this problem before. I would assume I need to shim the scope. The question is where do I shim, in the front or the back, under the base, or the bottom half of the ring? Any help would be appreciated. Thank You

toad67

I'd shim under the scope on the front ring. Try Midway or Brownell's for shims, I couldn't find any on the auction side.

nononsense

hadjii,

Start over and go back to basics.

Are the rings switched around?

Zero the scope to the middle of the range for elevation and windage.

Remove the bolt and bore sight the rifle on some bags or a rest.

If you're still out of adjustment and shooting low, get the Burris Signature rings with the inserts to use for raising the rear. Raising the rear lowers the front forcing you to raise the POI.

More problems, e-mail or post again.

Best.

Cheechako

quote:Originally posted by toad67
I'd shim under the scope on the front ring. Try Midway or Brownell's for shims, I couldn't find any on the auction side.


Shimming the front is the opposite of what you want if you are shooting low.

I'd check the bases. They are probaly not correct for the rifle. Shimming incorrect bases is only a band-aid, not a solution. If the bases are correct, I'd look at investing in a set of Burris (or other brand) rings.

Ray

toad67

quote:Originally posted by Cheechako
quote:Originally posted by toad67
I'd shim under the scope on the front ring. Try Midway or Brownell's for shims, I couldn't find any on the auction side.


Shimming the front is the opposite of what you want if you are shooting low.

I'd check the bases. They are probaly not correct for the rifle. Shimming incorrect bases is only a band-aid, not a solution. If the bases are correct, I'd look at investing in a set of Burris (or other brand) rings.

Ray



After rereading the post your correct. I was thinking he need to get the bullet 6" lower, thanks.

Oakie

Originally posted by nononsense
hadjii,

Start over and go back to basics.

Are the rings switched around?

Zero the scope to the middle of the range for elevation and windage.

Remove the bolt and bore sight the rifle on some bags or a rest.

If you're still out of adjustment and shooting low, get the Burris Signature rings with the inserts to use for raising the rear. Raising the rear lowers the front forcing you to raise the POI.

More problems, e-mail or post again.

Best.




[/quot

Best advice right there[;)]

tsr1965

hadjii,

You only gave us enough information, that we can only give you a direction to head. Nononsense is 100% the foremost expert in this. We need to know what bases and rings you are using. I seem to remember, that some two piece bases could get switched around on the Marlin X7.

Best

wpage

If it was correct b4 the base is reversed.