Quite an interesting mod, I liked its idea - to rebalance the original game without adding new content, but making it interesting again, posing new problems. For example, how to do without super-profitable production.
Unfortunately, the mod did not run on the OXCE I am using. But I managed to solve this problem by adding some missing lines to the rul file of the mod, earlier in OpenXcom it was not necessary to indicate them, but OXCE is more strict.
I also added Russian localization, in addition to the English strings contained in the mod.
But although I liked a lot, there are some that seem to me to be disadvantages. For example, arc shots from cannons actually turn them into grenade launchers. But the arc trajectory of the projectile also means its low velocity. As long as the projectile is explosive or incendiary, this is not a problem. But if it is armor-piercing ... The penetrating power of such a projectile directly depends on its speed. The higher the bullet speed, the more powerful the weapon. But the trajectory of the shot also tends to a straight line.
Therefore, it seems to me that two types of shots should be introduced for the modified weapon. The first is with a straight trajectory for armor-piercing bullets. And the second - with an arc, for explosive and incendiary. This can be explained by the fact that different ammunition has different powder charge power.
However, I'm not sure how this can be done, if at all. My knowledge of mod building is pretty superficial. OXCE introduces so many new features with each new version that I have long since stopped trying to figure them out.
But here and now I am posting the version without any changes, except for those necessary for its performance. Perhaps this old mod will also interest someone else, especially those who prefer to play with mods that do not change the original game too radically.