The data book is set up in a 4x6 inch format to allow ease of use while in the field and on the range. It is primarily intended for USMC Scout Sniper reference use while in the Scout Sniper Course or in the field.

It is recommended to use a 4x6 inch index binder or write in the rain binder/cover to protect your data book pages. You can use two round binder clips and a two hole punch to organize your data book. The data charts may be laminated or inserted into a flight crew checklist protector page. The pages may also be printed on write-in-the-rain paper. Simply print the sections you need. Older pages that are no longer relevant can be set aside and only the needed or relevant pages brought to the range or field.

The pages and topics can be selected and simply printed from any computer then locally reproduced by the units and schools as needed. Simply select the portions of the book needed.

The data book is based around the USMC M40A3 sniper rifle with the M8541 Scout Sniper Day Scope. There are data charts for the .50 Caliber SASR and the USMC MK-11 as well. Note to the user: These charts are for a reference only and as conditions change (Ammo, Environment, Shooter, etc.) the charts may not be accurate. They, once again, should be used as a guide and starting point.

The pages themselves are pretty straight forward for use and your basic sniper can understand them.

The Zero/Cold Bore/Grouping pages, KD (Known Distance) and UKD (Unknown Distance)/Range Card pages are flexible for individual use and can be printed by themselves. During 100 pard/meter cold bore, groups of zero it is recommended to cut out the shot placement from the target and tape it right into the data page.

Elevation and windage data may be entered in MOA or Mils as needed. It is recommended to write what is actually on the corresponding turret or reticle hold.

Wind direction and velocity or a depiction of the mirage can be drawn in the coresponding box.

The target type, sizes, and speeds should be drawn in the plot boxes. The user can depict the call via a diagram and crosshairs or simply use a code C=center, etc.

It is recommended while on a training range to use the "plot behind method" to save on time.

Keep an accurate, detailed, and understandable data book to assist in analyzing your shooting, your rifle/optic performance, ammunition performance, and the various environmental conditions.

Be cautious when using the charts and computing formulas. A common problem is switching from metric to US measurements -- stick with one or the other and ensure your math/conversions are correct and you are viewing the correct charts.

Semper Fidelis,

GySgt Reidsma