Load Book

Your complete Load Development solution, with built-in Shooting Diary and Target Analysis.
No ads and no subscriptions.

Manage Rifles

Add your rifles. Optionally record their serial numbers and initial round count.

Manage Bullets

Add your bullets for testing, optionally across multiple rifles. Store case, primer, powder, COAL...

Shooting Diary

Add a Shooting Diary entry while at the range. Record the weather, any notes, and link your targets.

App Screen

Load Development

Add new loads to test, whether powder charge or seating depth.

Target Analysis

Capture or select your target. Mark bullet holes to calculate group size.

PDF Reports

Export everything including load graphs as a PDF report - print or save it.

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Load Development

Everything you need to manage, record and analyse powder charge and seating depth testing.

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Select Your Rifle

Tap the lower Rifles button (or hold the top Rifle card) to select a rifle. Tap the Rifle card to edit its details.

Powder or Seating Depth

Whether you're testing a new powder, a change to the charge or you've progressed on to seating depth, it all starts here.

Select Your Bullet

Tap the lower Bullets button to display all bullets for the selected rifle. Bullets can be added to other rifles.

Graph Summary

See the results of your testing at a glance with charge and depth spark graphs.

Add Multiple Loads

Once a Rifle and Bullet are selected, add a load to test. You can add multiple over time.

Useful Indicators

Change the load's status as you go. Found a good load? Flag it as a favourite, promising, hot...

Select a Load to Test

Click 'View' to see the full details of a load your're testing, then progress its status from the drop-down.

Shot Data

Tap a charge entry to update its velocity, or multiple velocities if you're loading several rounds per charge.

Detail Summary

All details of the current load are shown in an easy to read format.

Connect your Chronograph

Sick of typing your velocities? Connect your FX True Ballistic chronograph to update your entries as you shoot.

Shooting Conditions

The current shooting conditions are taken from your shooting session automatically.

PDF Reports

Export everything as a PDF report for safe keeping. We're still adding new layouts, so keep checking the options!

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Powder Charge and
Seating Depth Graphs

Interactive charts allow you to visualise your shots to locate that perfect node.

Multiple Shots

Supports multiple shots per charge or seating depth.

Node Flags

Flag nodes as cold bore, good, bad, promising...

Calculate ES/SD

Calculates your ES and SD if you shoot multiple rounds per charge.

Update Bullet

Found a good node? Update your bullet with its details.

Shooting Diary

Adding sessions while at the range automatically links your test loads and target analysis, and prompts for your shot count.

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Track Everything!

Shooting Diary sessions link the loads you tested and targets you analysed. Enter notes as you shoot for reference.

Weather Device

Level up by connecting your weather meter for precise environmental conditions. Supports Kestrel, WeatherFlow, SkyWatch and others.

Location Info

Load Book retrieves and stores your location, altitude and local weather.

Rifle Shot Count

When you close your session, you're prompted for your shot count - this is added to your rifle's total.

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Target Analysis

Snap your target, set a known distance and place hole markers.

From Camera or Photos

From your camera at the range, or your photo library back at home, link your targets to your shooting diary.

Define a Known Distance

Simply select the ruler and select a known distance such as a 1 inch bullseye, or 20 cm of grid, to define the scale of your target.

Add Bullet Hole Markers

Use the cross hair to quickly add hole markers, or the fine tuning mode with magnifier overlay.

App Screen

Add Target Notes

Add a note to each target so you don't forget something important.

Marker Options

Choose from multiple options such as solid or dotted outlines, internal or external numbering, solid or partial crosshair...

Update Your Bullet

Found a load with a great group size? Click the save icon and you'll be prompted to update your current bullet with the results.

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Zoom In

Pinch to zoom in, then drag to just the right target.

Position the Overlay

Choose from vertical or horizontal analysis overlay, then drag it to your desired spot.

Crop

Drag the four corners of the highlight square to crop your image - and hide those flyers!

Share Your Results

Save your results as a zoomed, cropped image with an analysis overlay. Just share the best ones.