Waterproof Sniper's Logbook

Do you take your shooting skills seriously? Get a proper logbook, and you can monitor the performance of your rifle-cartridge combo down to each individual shot. This logbook contains blank range cards, military sketches, and observation logs supplemented by mnemonics for tactical first aid and such. This logbook is written in English, and it is made in Finland from totally waterproof limestone based paper.

This logbook is the design of an experienced and acclaimed Finnish military sniper instructor frustrated at traditional offerings.

Features

This logbook enables you to record the environmental and target data of each individual shot, as well as the details of your rifle, optic, and accessories. Among other things, there are tables for distance measuring using the milliradian formula, blank DOPE cards, illustrations of the dimensions of the human body for range estimation, wind call tables, et cetera.

There is also a transparent plastic disc with a ruler, 1:25k & 1:50k map scales, and a versatile grid to measure wind direction & speed, effective crosswind, inclination & cosine, and the visible size of objects at an angle.

Disc instructions

To use all the features of the measuring disc, put a 30-35 cm / 12”-14” shoelace or gutted 550 paracord in the origin point of the disc (yes, make a hole in the thing).

Wind speed

• Hold the disc arrow down and the disc to the wind
• The shoelace/paracord hangs free
• Read the wind speed from the disc at the shoelace/paracord angle

Cosine

• Hold the disc arrow down
• Aim at the target along the disc’s top edge
• Read the cosine multiplier from the disc at the shoelace/paracord
• Cosine multiplier x actual target distance from muzzle = effective distance
• E.g. if a target is 300 meters from your muzzle, but a 100 meters higher from sea level, the effective target distance you use to adjust your elevation is 283 meters
• This is due to gravity working only in the direction of Earth’s center mass
• So to recap: Shooting at an upward or downward angle, the ballistic elevation correction is always smaller than when shooting horizontally at the same target distance

Effective crosswind

• Hold the disc face up and arrow toward the target
• Have wind speed and angle ready
• Choose wind speed from the bottom row 1-10 (the speed unit doesn’t matter)
• Move up along the arc until you reach the wind angle line
• Go straight down to the bottom row, and read the effective crosswind speed
• E.g. 4 m/s wind at a 30 degree angle will yield a 2 m/s effective crosswind

The visible size of objects at an angle

• Hold the disc face up and arrow toward the target
• Imagine the object’s angle on the disc
• Choose the actual target size from the bottom row (e.g. 6.0)
• Move up along the arc until you reach the angle line
• Go straight down to the bottom row, and read the apparent target size
• If a 600 mm wide object is at a 30 degree angle (90 degrees means facing you), it will appear as 300 mm wide
• So: If an object you know to be 600 mm wide and at a 30 degree angle, and it measures at 1.0 MRAD wide on your optic’s reticle, it is 300 meters away
• Simple math!

Instructional video

This video shows the use of a similar measuring disc. The video is in Finnish with no subtitles, but you will get the general idea of how to operate the various features of the disc. The logbook shown in the video is also a Finnish language version not available in our store.

Recycling, son!

These logbooks are made of byproduct waste of limestone mines, which means the pads are a vulgar display of ecological thinking.

Made in Finland

Made in Finland. Modestone is a pretty new player in the world of waterproof papers but a prime example of Finnish innovation. Modestone notepads and notebooks are currently in law enforcement and military use in Finland, and they’re steadily gaining fame out there in the big world too.