I have created a series improved 25M zero targets (based of the standard US Military 25M zero target) that will allow the shooter to zero for 50/200M, 100M, and 300M using a 25yd/M range. The diferent targets are calibrated for both 20" full length service rifles and also 14.5" / 16" carbines with the shorter sight radius. The bold centering lines should assist in aquiring the good sight picture required for zeroing. These are also in different colors in addition to the traditional black for your individual preference.
Trajectories used were an average of M193 and M855 ballistic data. This should get most shooters in the right area. As you know, this can change with different loads.
ZERO TARGETS FOR AR15A2 / A3 / A4 20" RIFLES USING IRON SIGHTS
50/200M Calibrated Zero Target w/ RIBZ Instructions

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100M Calibrated Zero Target w/ RIBZ Instructions

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Standard 300M Zero Target

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Target sets can be downloaded in .pdf format below:
[50/200M Zero Target for 20" Rifle](http://home.comcast.net/~j_colt123/Improved AR15A2_A3_A4 Zero Target 50M.pdf)
[100M Zero Target for 20" Rifle](http://home.comcast.net/~j_colt123/Improved AR15A2_A3_A4 Zero Target 100M.pdf)
[Standard 300M Zero Target for 20" Rifle](http://home.comcast.net/~j_colt123/Improved M16A2_A3_A4 Zero Target.pdf)
TARGETS FOR 14.5" / 16" M4 & AR15 CARBINES USING IRON SIGHTS
50/200M Calibrated Zero Target w/ RIBZ Instructions

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100M Calibrated Zero Target w/ RIBZ Instructions

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Standard 300M Zero Target

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Target sets can be downloaded in .pdf format below:
[50/200M Zero Target for 14.5"/16" Carbine](http://home.comcast.net/~j_colt123/Improved M4_AR15 Carbine Zero Target 50M.pdf)
[100M Zero Target for 14.5"/16" Carbine](http://home.comcast.net/~j_colt123/Improved M4_AR15 Carbine Zero Target 100M.pdf)
[Standard 300M Zero Target for 14.5"/16" Carbine](http://home.comcast.net/~j_colt123/Improved M4_AR15 Carbine Zero Target.pdf)
TARGETS FOR AR15 RIFLES & CARBINES w/ OPTICS
Adjustment grid references are calibrated for 1/2 MOA adjustments that are common on most optics (Aimpoint, EOtech, etc…)
50/200M Calibrated Zero Target

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100M Calibrated Zero Target

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[Standard 300M Zero Target

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Target sets can be downloaded in .pdf format below:
[50/200M Zero Target for AR15 Rifles & Carbines w/ Optics](http://home.comcast.net/~j_colt123/Improved AR15 Optic Target 50M.pdf)
[100M Zero Target for AR15 Rifles & Carbines w/ Optics](http://home.comcast.net/~j_colt123/Improved AR15 Optic Target 100M.pdf)
[Standard 300M Zero Target for AR15 Rifles & Carbines w/ Optics](http://home.comcast.net/~j_colt123/Improved AR15 OpticTarget.pdf)
All targets are designed for standard 8.5x11 paper. Make sure your page scaling is set to ‘NONE’ in your print settings for propper scaling.
Grid dimensions for targets are:
Rifle Targets: .96cm
Carbine Targets: 1.3cm
Optics Targets: 1/2" (numbered grids)
Be safe and good shooting!