FAQ & How-To

Q: How accurate is the simulation? How are the deviations rated?
Q: When will be powder XXX available in GRT?
Q: Where do I find the input value for CBTO (Cartridge Base to Ogive)?
Q: Has there been a thought to add what primer is being used?
Q: Difference in estimated V0 and measured V0. What is the go-to parameter to start tweaking?
Q: Why the FIRED case volume?
Q: Can i add powder data from my copy of QuickLOAD to GRT?
Q: Will we be able to use GRT on Apple MAC, as an Android app, iOS app, on BSD, [...you name it] at some point?
Q: Is there a plan to add the extension for the external ballistics?

How-To: How to update to a newer GRT version?
How-To: GRTLab - How can I help to keep / check the powder models up to date?
How-To: How to help starting the development of a powder model that does not exist in GRT
How-To: How to use the OBT-Tool (Optimal Barrel Time)
How-To: How to translate the GRT program into another language
How-To: How to modify a cartridge spec to create a WildCat?
How-To: How to add a new Bullet to GRT and how to get it measured up?
How-To: How to determine the bulk density (Pcd) for your powder lot in GRT