Zeroing AR15 platforms

What do experienced shooters think about a 200 meter zero instead of a 300 meter zero.

For a true 300 meter Zero, you must place your target at 25M to achieve a POA/POI zero at 00M. For a true 300Meter zero the bullet will impact 33 inches low at 25 meters.
Remember this is for a 300 meter zero.

                Meters                              Path Inches          
                     0                                         -2.5
                     25                                       -0.33
                     50                                        1.56
                     75                                        3.13
                     100                                      4.37
                     125                                      5.27
                     150                                      5.8
                     175                                      5.94
                     200                                      5.68
                     225                                      4.98
                     250                                      3.82
                     275                                      2.17
                     300                                        0

The bullet actually crosses line of sight at 31 meters not 25
For a 300 meter zero you need to place your target at 31 meters

                      This is for a True 200 meter Zero
                    
                    Meters                                  Path Inches
                     0                                                -2.5
                     25                                              -0.87
                     50                                              0.43
                     75                                              0.37
                     100                                            1.94
                     125                                            2.11
                     150                                            1.86
                     175                                            1.17
                     200                                              0
                     225                                            -1.67
                     250                                            -3.88
                     275                                            -6.66
                     300                                            -10.05

The bullet actually crosses line of sight at 41 meters.
For a 200 meter zero you need to place your target at 41 meters.

A complete discussion can be found here:

https://www.m4carbine.net/showthread.php?t=34671

https://www.m4carbine.net/showthread.php?t=44155

https://www.m4carbine.net/showthread.php?t=36511&highlight=zeroing

Try knocking out a search for common topics like this in the future.

Thanks