I keep recieving N/A during my barrel and firearm tests despite the designs
i¨ve made being functional. Unsure if doing something wrong here?
EDIT: After some experimentation, shortening the round a bit and making my propellant a tad more reliable I've made a decent handgun and carbine, that while only able to get through around 2 militeres of vehicle armour should function against enemy infantry while being cheap to produce. Thanks for the help Elfkan.
The reason why it shows nan in this case is because your propellant is too weak to actually propel the bullet at a meaningful speed.
Some things I noted from a quick lookover:
1. Projectile to casing ratio looks to be off. Generally when you are starting out you always want your projectile to be shorter than your casing.
2. M26 is the most reliable propellant to use as RLG can get pretty crazy if you don't experiment with it significantly. With that, your propellant grain is also very massive for a small arms cartridge. You want many small propellant grains for a faster burn, ex 1mm or sub 1mm grains. You can visualize this by seeing how different shapes burn in real life!
You also may want to play with perforated grains if desired performance is not met due to perforated grains being able to burn from both the outside and inside at the same time leading to a neutral burn time graph.
Hopefully this helps!
