submunitionConeAngle is only used to precalculate directions when the ammo's config is first loaded, if we want attachments to have multiplier on it, we would need to recalculate these on every shot.
That would be quite annoying.

We could simplify it by
submunitionDIrection = lerp(VZero, submunitionDirection, coneAngleFactor)
so the lower coneAngleFactor, the closer to straight ahead the submunition will be spawned, effectively shrinking the cone.. Would that work for you?

In T169970#2421391, @dedmen wrote:

We could simplify it by
submunitionDIrection = lerp(VZero, submunitionDirection, coneAngleFactor)
so the lower coneAngleFactor, the closer to straight ahead the submunition will be spawned, effectively shrinking the cone.. Would that work for you?

Where would coneAngleFactor be able to be defined? If in the weapon and muzzle attachment configs, I should think this would not only be a good way of going about things but also fulfill the request.

Yeah I think this would be fine, even if it had to just be on weapons for the precalculation reason

factor gonna be
0 == original
1 == straight forward for 100% of shots
-1 == Double the original angle
-2 == 3x original angle

so you can also use it to increase spread

Or in other words making MagazineCoef, AmmoCoef and MuzzleCoef classes effect submunition projectiles.

I would say no to that, but instead offer you SubmunitionCoef class, that only affects later spawned submunitions, and seems like only parameter will be the spread/cone coef.
The only other possible parameter I see is speed of the created submunition.

And likely only for normal projectiles (Like shotgun), not for missiles and flares and such.

Also the coef will travel along, if the submunition spawns more submunitions, these will also receive the coef

Okay I will try that once its out. And one other thing, is it possible that this could be added to the weapon itself? Using the shotguns from contact DLC as example, the short barrel could be something like:

class sgun_HunterShotgun_01_sawedoff_F: sgun_HunterShotgun_01_sawedoff_base_F
{
    class SubmunitionCoef {
	coneAngleCoef = -0.5; // 50% more of original angle
    };
}

Combining muzzle coef (Its gonna be on the weapons muzle) with attachment coef would be very annoying to get right though.
Just :crossing_fingers: to get that right

Muzzle config entry submunitionConeCoef

I guess that can be something for the future then, I will take a look when dev branch gets updated then

It landed on dev branch last week

Sorry for the late reply, but I finally got around to trying this out. I tried these values.

25.0f = spread very wide
0.25f = narrow spread
1.0f = all go straight

ill try more later, but so far looks like it works well.

Very cool to see in patch 2.14. The notes mention doing this for muzzle / weapon configuration, would the config look like what I have quoted?

In T169970#2422487, @namenai wrote:

Okay I will try that once its out. And one other thing, is it possible that this could be added to the weapon itself? Using the shotguns from contact DLC as example, the short barrel could be something like:

class sgun_HunterShotgun_01_sawedoff_F: sgun_HunterShotgun_01_sawedoff_base_F
{
    class SubmunitionCoef {
	coneAngleCoef = -0.5; // 50% more of original angle
    };
}

No the way it works is:

class sgun_HunterShotgun_01_sawedoff_F: sgun_HunterShotgun_01_sawedoff_base_F
{
    submunitionConeCoef = -0.5;
};