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Author Topic: No adjustment left on scope, groups still way off  (Read 1573 times)

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Offline HuntenNut

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No adjustment left on scope, groups still way off
« on: September 04, 2005, 03:14:05 PM »
greetings,

Just got back from the range with my new sportster 17HM2.

The good news is, its a real shooter, with dime size groups at 25yds.

The bad news, the groups are about 10" left of POA and an 1" low, but I have used up all adjustment both ways on my scope which is a Redfield Tracker (Japan) 4-16x44AO mounted with factory base and Leupold Rifleman High rings.

Do I have a bad scope, or do I need to shim the rings and base? If so, what is the recommended procedure for shimming?

Thanks
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Offline quickdtoo

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No adjustment left on scope, groups still w
« Reply #1 on: September 04, 2005, 03:23:02 PM »
Try removing one of the rings and turn it 180 degrees and remounting the scope.
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Offline lostsniper308

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No adjustment left on scope, groups still w
« Reply #2 on: September 04, 2005, 04:47:30 PM »
so no more adjustment for moving POI right remaining? just an off center mount sounds to me. Burris Signature Rings with inserts is the cure fot it.
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Offline trotterlg

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No adjustment left on scope, groups still w
« Reply #3 on: September 04, 2005, 06:51:56 PM »
lostsniper308 has it right, Burris signature "Z" rings with the offset inserts will fix you up perfect if turning one ring you have doen't work, and they are very nice rings.  You will probably need the High rings, I have some Medium and I had to grind a very small amount off the top of the hammer and hammer extention to get it to clear the eye bell on a 4 to 12 X 40 Swift scope.  Larry
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Offline quickdtoo

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No adjustment left on scope, groups still w
« Reply #4 on: September 04, 2005, 08:16:26 PM »
HuntenNut, if swapping the rings around doesn't help, the Burris Signature "Zee" rings along with the optional Pos-Align® offset insert kit will fix ya right up as stated above. The rings are $30 at www.theopticzone.com and the offset insert kit is $10.

http://theopticzone.com/detail.aspx?ID=2196

http://theopticzone.com/searchresult.aspx?CategoryID=159

http://burrisoptics.com/rings.html
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Offline dave375hh

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No adjustment left on scope, groups still w
« Reply #5 on: September 05, 2005, 03:16:29 AM »
Millet Angle-Loc rings have to most adjustment availible in a std ring. By offsetting the clamps on both ends of the scope you can move it a bunch. 10 inches would be no problem at all. They're $18.12 from Midsouth, cheap fix!
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Offline quickdtoo

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No adjustment left on scope, groups still w
« Reply #6 on: September 05, 2005, 06:22:04 AM »
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Offline MSP Ret

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No adjustment left on scope, groups still w
« Reply #7 on: September 05, 2005, 07:00:05 AM »
I have Millet AngleLocs on several of my Handi's and all work flawlessly!!! If the nut behind the screwdriver uses common sense and a bit of care the Millets are the way to go in my book. Excellent adjustment, they hold the scope nice and firmly without marring it as well as perfect alignment with the crosshairs centered in the range of travel. A very solid mount without extra loose pieces to track down and keep track of is a bonus. Everyone here has a preference and that is not a bad thing, it's just been my expierence after using the Millets and evaluating them with an open mind they are by far the best going for the money and they work GREAT!!!!....<><.... :grin:
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Offline HuntenNut

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No adjustment left on scope, groups still w
« Reply #8 on: September 05, 2005, 07:21:13 AM »
Thanks for the suggestions guys. I will try the Millets.

So is this a common problem? It must be the mount and not the rings, as these rings have been on several other guns with no problems.
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Offline trotterlg

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No adjustment left on scope, groups still w
« Reply #9 on: September 05, 2005, 09:27:40 AM »
HuntingNut:  Not to dis the Millets, but go with the Burris rings, they are far and away stronger and easy to use, you will thank your self you did it right the first time.  You will buy the Burris  after you try the Millets.  Larry
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Offline HuntenNut

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No adjustment left on scope, groups still w
« Reply #10 on: September 05, 2005, 11:50:05 AM »
Yes, after looking at both, looks like the Burris is the better way to go.

So exactly how do you adjust for windage using these rings?

Are the also adjustable for elevation, or will I have to shim the base for that?
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Offline quickdtoo

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No adjustment left on scope, groups still w
« Reply #11 on: September 05, 2005, 12:16:00 PM »
A basic description of the Signature offset inserts is offered near the bottom of this page..

http://burrisoptics.com/welcome.html

You can change both windage and elevation POI with the offset inserts. Detailed instructions come with the insert kit.
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Offline lostsniper308

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No adjustment left on scope, groups still w
« Reply #12 on: September 05, 2005, 04:13:46 PM »
Yea lets see if i can explain it without a link (no offense intended Quick) the sigs have 2 half inserts to each ring of 0" value and depending on the POI change needed different thicknessess of inserts are placed in the ring instead of the 0 value to shift the scope. The inserts can swivel a bit and this is what keeps the scope undamaged.

think i got it right  :grin:
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Offline quickdtoo

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No adjustment left on scope, groups still w
« Reply #13 on: September 05, 2005, 04:24:49 PM »
Well, sorta...the offset inserts come in pairs of + and - 5, 10 and 20. Depending on what you want to do with the POI, you would use a + and a - of the same size on one end and what ever you need on the other end, could even be a 0 set, just depends on the amount of adjustment needed.
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Offline HuntenNut

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No adjustment left on scope, groups still w
« Reply #14 on: September 06, 2005, 01:05:25 AM »
I see, thanks guys, I just ordered a set from Midsouth. Seems like that should fix my problem.
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Offline Savage .250

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No adjustment left on scope, groups still w
« Reply #15 on: September 06, 2005, 09:01:11 AM »
Saw a guy at the range sunday who had a simular problem with his scope.
  He said  the scope and gun were new and he had bore sighted the combo
  and was trying to sight it in .  He was shooting high and could not get the adjustment with-in the scope to get it down. In fact his "down" knob was up against the internal stop. To say he was upset is being kind. As far as looks go everything looked ok but he was at a loss. Don`t know the make of scope.
 
 " The best part of the hunt is not the harvest but in the experience."
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Offline lostsniper308

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No adjustment left on scope, groups still w
« Reply #16 on: September 06, 2005, 04:24:08 PM »
i got close quick :)
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Offline HuntenNut

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No adjustment left on scope, groups still w
« Reply #17 on: September 08, 2005, 10:01:30 AM »
I got the Burris Rings today from Midsouth. After mounting the rings, I did a "rough" bore sighting by looking through the barrel at a spot on the wall in my garage about 10ft from the muzzle. Using the +-20 inserts in the rear and the +-10's in the front. I have it where it looks like the POI should be centered left right, but still a few inches low. This is with the crosshairs completely centered in the scope. I am thinking of shimming the base to get the POA to move down a bit. I will have to see exactly how far off it is when I get to test fire again this weekend. If I do need to shim the base, what is the recommended shimming material to use?
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Offline quickdtoo

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No adjustment left on scope, groups still w
« Reply #18 on: September 08, 2005, 10:13:45 AM »
No need to shim, use the -5 insert in the bottom of the front ring and see what it does for ya. The rear ring should have a + insert in the bottom ring, then just rotate one set of the inserts until you get the reticle centered left and right. Always use a + and - set of the same number in each ring.
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Offline HuntenNut

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No adjustment left on scope, groups still w
« Reply #19 on: September 08, 2005, 10:40:59 AM »
Well, I currently have the 10's in front and the 20's in back which should give me the most movement possible according to the directions.  I played with it a while and this seems to be about as good as its gonna get. If I replace the 10's with the 5's, wouldn't that result in less adjustment than I have already achieved?
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Offline quickdtoo

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No adjustment left on scope, groups still w
« Reply #20 on: September 08, 2005, 11:15:51 AM »
Putting the -5 in the bottom ring in front and the +20 in the bottom ring in back would give you the max elevation change, the -5 is thinner or lower than the -10.
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Offline ironglow

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No adjustment left on scope, groups still w
« Reply #21 on: October 18, 2005, 01:56:36 PM »
...I am very pleased with the Millet rings so far..no shims needed , laterally..

  Haven't had a scope yet that was too far to bring back...
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Offline MSP Ret

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« Reply #22 on: October 18, 2005, 02:58:40 PM »
Yep, my experiences exactly. My Millet Angle Locs have all worked wonderfully. They are GREAT!!!....<><.... :grin:
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