Ballistics - Update the B_556x45_dual

[Laid3acK]

When merged this pull request will:

• Fix [Ballistics] RFB SDAR zero'd above 100m shoots ground #7832

Without real datas about underwater ammo, the airFriction is basically calculated with the Ruthberg values: the 20Rnd_556x45_UW_mag initSpeed and a subsonic 5.56 from the CfgAmmoReference:

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Ammo Class: B_556x45_dual
drag model 7
ballistic coefficient 0.151
MaxRanges (m): [250, 250]
MuzzleVelocities (m/s): [262, 272]
Max. Velocity diff (m/s): 0.19
Max. Drop diff (cm): 0.44
Max. Tof diff (ms): 0.5
Optimal airFriction: 0.00054976

The goal is something coherent between the both ballistics: in-game Range cards.
As reference, this article with a DSG Technology underwater 5.56x45 super and subsonic bullets.

- The arifle_SDAR_F ACE_IronSightBaseAngle value is a compromise between the default discreteDistance 30 m (20Rnd_556x45_UW_mag) and the discreteDistance 100 m (30Rnd_556x45_Stanag).

All kudos to @BaerMitUmlaut, as mentioned it was an airFriction issue.

[Laid3acK]

In the futur, i would like to update the B_556x45_dual with the DSG Technology values when public.
These ammos seem to be already tested by SF in some countries.
Why not a new ACE magasine with this bullet for the 5.56 rifles ?

[jonpas]

Is B_556x45_dual actually a vanilla classname? If not and you created it, should add ACE prefix.

[Laid3acK]

Vanilla classname inherited from the B_556x45_Ball.
It was as the beginning the B_56x15_dual from the BulletBase,
i don't know when BI updated this bullet.