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If zeroed at 100 yds, what can I expect to see at 200 yds. with no adjustments

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If you mean bullet drop would need to know calibre and cartridge info as velocity and BC determine drop

Posted on Apr 13, 2015

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Posted on Jan 02, 2017

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sounds like it could be the scope more than any thing but shoot at 100 yd 5 shot group and see if it groups if if shots dance around on target make shure your mounts are tight there is time that companys send screws for the mounts that are to long for the holes that are taped in the gun the mount mite feel tight but could have play yet witch make your gun not shoot well you could also try setting the scope on 4 power shoot a shot at 50 yards then crank it up to 9 power shoot a shot if bullet impact moves it is the scope hope i helped ya out and good luck

Posted on Mar 01, 2009

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SOURCE: unable to zero in on target?

take it in because if he bumped the rail the scope is on it can make it inaccurate

Posted on Aug 03, 2009

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SOURCE: Windage fully clockwise "In" and not quite there at 100 yds.

remount the scope using millett angle lock rings that allow you to adjust for windage. bring the scope as close to hitting bulls eye as possible then use the scopes adjustments for the fine tuning. before remounting you will want to recenter the reticule.

Posted on Mar 24, 2010

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1 Answer

What is bullet drop at 100 and 300 yds. when zeroed in at 200yds.


my 30/06 drop with 180gran is 1inch zeroed in at 200 yds

Mar 16, 2015 | Optics

1 Answer

270cal. rem corlok 150gr. zero at 100 where at 50 200 300 400? where will it hit?


Zero at 200 and it'll be 1 1/2" high at 100 and about nine inches low at 300.

Sep 06, 2014 | Optics

1 Answer

Sight in


Depends totally on the ammunition you use. It will be markedly different for a light loaded heavy bullet .38 special as compared to a fast light bullet .357. The difference could be measured in feet rather than inches at 100 yards.

There are several ballistics programs on the internet that will help you with this, but you need to know things like bullet speed, ballistic coefficient, distance, etc. to use them effectively. Something as simple as a call to the ammunition manufacturer could answer your question quickly. Just ask them the drop of the bullet at 25 and 100 yards and adjust your sights using that information.

Mar 29, 2014 | Optics

1 Answer

I need to make an elevation adjustment; the cross-hair adjustment is not enough . Perhaps a more gross adjstment is possible where the ring mounts are located?


the easy way to get a little more ajustment of about 4-5 inches at 100 yds is to,,,cut up a 3 bit's of 35mm colour film to fit under the scope,,undo the rear scope top mount and lift the eye bell off its mount,,now slip the 3 bits of 35mm film under the scope body and reclamp the top mount cap,,,dont forse it up to tight ,,this will lift the point of aim
at least 4 or 5 inches at 100 yds

Aug 24, 2010 | Leupold 54120 2-7x33mm European 30mm Matte...

1 Answer

How to use the BDC on my rifle scope



  1. Step 1 Take a rifle with a properly installed BDC bullet drop compensating reticle to a rifle range. Using ear protection zero the scope reticle so that the point of impact corresponds to the center of the cross hairs at the distance you have selected - typically 100 or 200 yds.
  2. Step 2 Determine the trajectory of the specific cartridge you have selected. There are several ways to do this. Ammo manufacturers publish trajectory and wind drift information. There are web based ballistic calculators like http://www.biggameinfo.com/BalCalc.aspx which will tell you how much your bullet drops at known distances.
  3. Step 3 Scope manufacturers like Leupold can be a valuable source of information about their reticle: "Leupold® Ballistic Aiming System: Boone and Crockett Club® Big Game Reticle aiming system provides a series of additional aiming points to improve your ability to shoot accurately at longer ranges. Nikon2_bing.gif also provides good information suggesting the marks on their reticle be used for zero at 100yds followed by circles below representing 200, 300, 400 and 500 yds if the cartridge travels around 2800 ft per sec. Nikon suggests the center cross hair be zeroed at 200 yds for magnum calibers traveling around 3000 ft per sec. We understant that each variation of different bullet weight and powder charge changes trajectory and a scope manufacturer can not build a different reticle for each different cartridge made so practice on the range to determine how well the marks relate to the actual impact of where your bullet strikes at a know distance is important. The one thing that people using BDC scopes typically have problems with is that a BDC scope has the reticle in the second focal plane of the scope. If the reticle was in the first focal plane of the scope the reticle would look smaller on low powers like 3x and grow proportionately larger as the power increased to say 9x top power. The problem is that while the marks on the BDC reticle correspond accurately to the bullet drop at the know distances 200, 300yds etc. What happens when you lower the power from the scopes maximum power to any other lower power is the reticle stays the same size and the field of view within the scope increases which means that the distance between these marks on the BDC reticle no longer corresponds to the point where the bullet will strike. In short BDC reticles only work at the maximum power of the scope or at a set specific power. At all other powers these BDC reticles do not accurately represent where the bullet will strike.
  4. Step 4 The center X always remains the same. If you zero at 100 yards and you know that your bullet drops 8 inches at 300 yards you could forget about the BDC marks and hold the center X 8 inches high - that works at any power 3x or 9x and should be used at lower powers. If you zero the center crosshair at 100yds and have the BDC scope at the maximum power 9X then the first line or circle below the center X should be the mark you place on the center of the 200 yard target----- the bullet strike should hit the center. If by some chance you put the scope on 3x and placed that first mark below the center cross hair on that 200 yard target you would shoot over the top of the target. This is because as the power of the scope decreases the field of view increases the angle increase and gets wider. You can experiment with known power settings and see at a specific power say 3x what that first circle down corresponds to and make notes because at any set power what the marks correspond to will be repeatable.
I got this from a website, hope it helps.

Apr 08, 2010 | Hammers Air Gun Rifle Scope 3-7x20 With...

1 Answer

Windage fully clockwise "In" and not quite there at 100 yds.


remount the scope using millett angle lock rings that allow you to adjust for windage. bring the scope as close to hitting bulls eye as possible then use the scopes adjustments for the fine tuning. before remounting you will want to recenter the reticule.

Mar 14, 2010 | Bushnell ® Elite® 3200 3 - 9x40 mm...

1 Answer

I used all of the elevation adjustment on 3-9-50mm scope and my 22 rifle still shoots low at 25 yards


its a bad mount thats doing this,,,you can get over it easly by letting off the rear top mount of the scope (the mount near your eye) and pushing under your scope a strip of 35mm film this will lift the eye end of the scope giving you more range,,(elevation) only put 2 or 3 strips of film under the scope any more that this could bend the scope tube when you tighten it up
but a strip of film is about 25th of an inch and 1th will give you 1/4 of an inch at 100 yds ie:1 click! so you should easly get 10 inches at 100 yds or more with 3 strips of 35mm film under the scope even with bullet drop, the only other way to sort this out is to buy an adjusterbal mount witch is very pricy and 35mm film is cheaper, i do this all the time with my scopes

Nov 21, 2009 | Tasco Scope Guide Quickly Zeroing Rifle...

1 Answer

Unable to zero in on target?


take it in because if he bumped the rail the scope is on it can make it inaccurate

Aug 01, 2009 | Optics

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