Run your load development in rounds: as many charge weight and seating depth tests as it takes, in any order, then lock in your final load. Import a rifle and load you already saved, and send the result back to My Rifles & Loads.
LRS Pro Feature
The Load Development Lab is part of LRS Pro. Start your free 7-day trial to unlock it, or sign in if you already have an account.
You followed a password reset link. Choose a new password below.
Safety: Refer to published reloading manuals for all load development parameters. Never exceed published maximum charge weights. This tool does not recommend safe loads or reloading practices. User assumes all risk.
Rifle and Load
Import from My Rifles & Loads. Pick a rifle and a load you already saved and the fields below fill in. You can still edit anything after.
Pressure: enter sea-level (barometric) pressure, as in a weather report, so it matches the calculators. Elevation is entered separately.
Finished entering rifle and load details? Hide them to keep the page short. Tap Show at the top of this card to reopen.
Tests
Add a card for every round you shoot. Inside a test, each row is one string: enter the charge or length, then its shot velocities. Use + Shot or – Shot to match how many rounds you fired, and tap Done, Collapse when a string is finished. On any row, tap Use as Final to carry those numbers to the Final Load section. When a whole round is finished, tap Hide Test at the bottom of its card.
Test log
Final Load
Send to My Rifles & Loads. Saves this project, then writes the final charge, average velocity, and SD to the load you imported. If you did not import a load, it creates a new one under the rifle you picked. Next, build drop data from it in the Advanced Ballistics Calculator.
Save and Export
My Saved Projects
Saving again with the same project name overwrites that save. Available on any device when you are signed in.
Loading…
Found this useful?
Here are some images showing how the calculator graphs outputs, as well as showing the importance of controlling standard deviation in your reloading process.
