Ballistics - Overworked .408 CheyTac based on new JBM Ballistics data

* Added 419gr and 305gr variants (vanilla ammo == 419gr) * Muzzle velocities from http://www.cheytac.com * G7 BCs from http://www.jbmballistics.com/
2024-08-30 18:23:18 +00:00 · 2016-11-13 18:09:28 +01:00 · 2016-11-13 18:09:28 +01:00 · 2e81f7c104
commit 2e81f7c104
parent 88596aaaf1
7 changed files with 131 additions and 46 deletions
--- a/addons/atragmx/XEH_postInit.sqf
+++ b/addons/atragmx/XEH_postInit.sqf
@ -15,7 +15,8 @@ if ((profileNamespace getVariable ["ACE_ATragMX_profileNamespaceVersion", 0]) ==

                      [".50 Beowulf"       ,  563, 100, 0.0657485, -0.00202645, 3.81, 0, 2, 10, 120, 0, 0, 21.71, 12.7, 50.80, 0.210, 1, "ASM" , [[-15,560],[0,561],[10,562],[15,562],[25,564],[30,565],[35,566]]       , [[0,0],[0,0],[0,0],[0,0],[0,0],[0,0],[0,0]], true],

-                      [".408 Chey Tac"     , 910, 100, 0.0569400, -0.00038944, 3.81, 0, 2, 10, 120, 0, 0, 26.57, 10.4, 33.02, 0.970, 1, "ASM" , [[-15,883],[0,890],[10,897],[15,902],[25,916],[30,925],[35,936]], [[0,0],[0,0],[0,0],[0,0],[0,0],[0,0],[0,0]], true],
+                      [".408 CheyTac 305gr", 1067, 100, 0.0482451, -0.00063655, 3.81, 0, 2, 10, 120, 0, 0, 19.76, 10.4, 33.02, 0.569, 1, "ICAO", [[-15,1040],[0,1047],[10,1054],[15,1059],[25,1073],[30,1082],[35,1093]], [[0,0],[0,0],[0,0],[0,0],[0,0],[0,0],[0,0]], true],
+                      [".408 CheyTac 419gr",  867, 100, 0.0613501, -0.00044958, 3.81, 0, 2, 10, 120, 0, 0, 27.15, 10.4, 33.02, 0.866, 1, "ICAO", [[-15,840],[0,847],[10,854],[15,859],[25,873],[30,882],[35,893]]       , [[0,0],[0,0],[0,0],[0,0],[0,0],[0,0],[0,0]], true],

                      ["9.3×64mm"          ,  870, 100, 0.0619295, -0.00108571, 3.81, 0, 2, 10, 120, 0, 0, 14.90, 9.30, 35.56, 0.368, 1, "ASM" , [[-15,843],[0,850],[10,857],[15,862],[25,876],[30,885],[35,896]]       , [[0,0],[0,0],[0,0],[0,0],[0,0],[0,0],[0,0]], true],

--- a/addons/ballistics/CfgAmmo.hpp
+++ b/addons/ballistics/CfgAmmo.hpp
@ -601,19 +601,36 @@ class CfgAmmo {
    };
    class B_408_Ball : BulletBase {
        timeToLive=10;
-        airFriction=-0.00038944;
-        typicalSpeed=910;
-        tracerScale = 1.3; //1.2;
+        airFriction=-0.00044958;
+        typicalSpeed=867;
+        tracerScale = 1.3;
        ACE_caliber=10.363;
-        ACE_bulletLength=54.0;
-        ACE_bulletMass=26.568;
+        ACE_bulletLength=55.1942;
+        ACE_bulletMass=27.1507; // 419 gr
        ACE_transonicStabilityCoef=1;
        ACE_ammoTempMuzzleVelocityShifts[]={-26.55, -25.47, -22.85, -20.12, -16.98, -12.80, -7.64, -1.53, 5.96, 15.17, 26.19};
-        ACE_ballisticCoefficients[]={0.97};
+        ACE_ballisticCoefficients[]={0.434};
        ACE_velocityBoundaries[]={};
-        ACE_standardAtmosphere="ASM";
-        ACE_dragModel=1;
-        ACE_muzzleVelocities[]={910};
+        ACE_standardAtmosphere="ICAO";
+        ACE_dragModel=7;
+        ACE_muzzleVelocities[]={867};
+        ACE_barrelLengths[]={736.6};
+    };
+    class ACE_408_Ball : BulletBase {
+        timeToLive=10;
+        airFriction=-0.00063655;
+        typicalSpeed=1067;
+        tracerScale = 1.3;
+        ACE_caliber=10.363;
+        ACE_bulletLength=41.4528;
+        ACE_bulletMass=19.7637; // 305 gr
+        ACE_transonicStabilityCoef=1;
+        ACE_ammoTempMuzzleVelocityShifts[]={-26.55, -25.47, -22.85, -20.12, -16.98, -12.80, -7.64, -1.53, 5.96, 15.17, 26.19};
+        ACE_ballisticCoefficients[]={0.279};
+        ACE_velocityBoundaries[]={};
+        ACE_standardAtmosphere="ICAO";
+        ACE_dragModel=7;
+        ACE_muzzleVelocities[]={1067};
        ACE_barrelLengths[]={736.6};
    };
    class ACE_106x83mm_Ball : B_408_Ball {
--- a/addons/ballistics/CfgMagazines.hpp
+++ b/addons/ballistics/CfgMagazines.hpp
@ -287,6 +287,18 @@ class CfgMagazines {
        initSpeed = 880;
    };
    
+    class 7Rnd_408_Mag: CA_Magazine {
+        initSpeed = 867;
+    };
+    class ACE_7Rnd_408_305gr_Mag: 7Rnd_408_Mag {
+        author = ECSTRING(common,ACETeam);
+        ammo = "ACE_408_Ball";
+        displayName = CSTRING(7Rnd_408_305gr_Mag_Name);
+        displayNameShort = CSTRING(7Rnd_408_305gr_Mag_NameShort);
+        descriptionShort = CSTRING(7Rnd_408_305gr_Mag_Description);
+        initSpeed = 1067;
+    };
+
    class 5Rnd_127x108_Mag;
    class ACE_5Rnd_127x99_Mag: 5Rnd_127x108_Mag {
        author = ECSTRING(common,ACETeam);
--- a/addons/ballistics/CfgVehicles.hpp
+++ b/addons/ballistics/CfgVehicles.hpp
@ -26,6 +26,7 @@ class CfgVehicles {
            MACRO_ADDMAGAZINE(ACE_30Rnd_556x45_Stanag_Tracer_Dim,1);
            MACRO_ADDMAGAZINE(ACE_10Rnd_338_300gr_HPBT_Mag,4);
            MACRO_ADDMAGAZINE(ACE_10Rnd_338_API526_Mag,4);
+            MACRO_ADDMAGAZINE(ACE_7Rnd_408_305gr_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_API_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_AMAX_Mag,4);
@ -46,6 +47,7 @@ class CfgVehicles {
            MACRO_ADDMAGAZINE(ACE_20Rnd_762x51_Mag_Tracer_Dim,4);
            MACRO_ADDMAGAZINE(ACE_10Rnd_338_300gr_HPBT_Mag,4);
            MACRO_ADDMAGAZINE(ACE_10Rnd_338_API526_Mag,4);
+            MACRO_ADDMAGAZINE(ACE_7Rnd_408_305gr_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_API_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_AMAX_Mag,4);
@ -67,6 +69,7 @@ class CfgVehicles {
            MACRO_ADDMAGAZINE(ACE_20Rnd_762x51_M993_AP_Mag,4);
            MACRO_ADDMAGAZINE(ACE_10Rnd_338_300gr_HPBT_Mag,4);
            MACRO_ADDMAGAZINE(ACE_10Rnd_338_API526_Mag,4);
+            MACRO_ADDMAGAZINE(ACE_7Rnd_408_305gr_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_API_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_AMAX_Mag,4);
@ -221,6 +224,7 @@ class CfgVehicles {
            MACRO_ADDMAGAZINE(ACE_30Rnd_65_Creedmor_mag,4);
            MACRO_ADDMAGAZINE(ACE_10Rnd_338_300gr_HPBT_Mag,4);
            MACRO_ADDMAGAZINE(ACE_10Rnd_338_API526_Mag,4);
+            MACRO_ADDMAGAZINE(ACE_7Rnd_408_305gr_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_API_Mag,4);
            MACRO_ADDMAGAZINE(ACE_5Rnd_127x99_AMAX_Mag,4);
--- a/addons/ballistics/CfgWeapons.hpp
+++ b/addons/ballistics/CfgWeapons.hpp
@ -541,6 +541,10 @@ class CfgWeapons {
    };
    */
    class srifle_LRR_F: LRR_base_F {
+        magazines[] = {
+            "7Rnd_408_Mag",
+            "ACE_7Rnd_408_305gr_Mag"
+        };
        initSpeed = -1.0;
        ACE_barrelTwist=330.2;
        ACE_barrelLength=736.6;
--- a/addons/ballistics/stringtable.xml
+++ b/addons/ballistics/stringtable.xml
@ -1686,6 +1686,45 @@
            <Hungarian>Kaliber: 8,6x70mm (API526)&lt;br /&gt;Lövedékek: 10</Hungarian>
            <Japanese>口径: 8.6x70mm (API526)&amp;lt;br /&amp;gt;装填数: 10</Japanese>
        </Key>
+        <Key ID="STR_ACE_Ballistics_7Rnd_408_305gr_Mag_Name">
+            <English>.408 7Rnd Mag (305gr)</English>
+            <French>Ch. .408 7Cps (305gr)</French>
+            <Spanish>Cargador de 7 balas de .408 (305gr)</Spanish>
+            <Polish>Magazynek .408 7rd (305gr)</Polish>
+            <Russian>Магазин из 7-ти .408 (305gr)</Russian>
+            <German>.408 7-Patronen-Magazin (305gr)</German>
+            <Italian>.408 7Rnd Mag (305gr)</Italian>
+            <Czech>.408 7náb. Zásobník (305gr)</Czech>
+            <Portuguese>Carregador .408 (305gr) com 7 cartuchos </Portuguese>
+            <Hungarian>.408 7-lövedékes tár (305gr)</Hungarian>
+            <Japanese>.408 7発入り 弾倉 (305gr)</Japanese>
+        </Key>
+        <Key ID="STR_ACE_Ballistics_7Rnd_408_305gr_Mag_NameShort">
+            <English>.408</English>
+            <French>.408</French>
+            <Spanish>.408</Spanish>
+            <Polish>.408</Polish>
+            <Russian>.408</Russian>
+            <German>.408</German>
+            <Italian>.408</Italian>
+            <Czech>.408</Czech>
+            <Portuguese>.408</Portuguese>
+            <Hungarian>.408</Hungarian>
+            <Japanese>.408</Japanese>
+        </Key>
+        <Key ID="STR_ACE_Ballistics_7Rnd_408_305gr_Mag_Description">
+            <English>Caliber: .408 CheyTac (305gr)&lt;br /&gt;Rounds: 7</English>
+            <French>Calibre: .408 CheyTac (305gr)&lt;br /&gt;Cartouches: 7</French>
+            <Spanish>Calibre: .408 CheyTac (305gr)&lt;br /&gt;Balas: 7</Spanish>
+            <Polish>Kaliber: .408 CheyTac (305gr)&lt;br /&gt;Pociski: 7</Polish>
+            <Russian>Калибр: .408 CheyTac (305gr)&lt;br /&gt;Патронов: 7</Russian>
+            <German>Kaliber: .408 CheyTac (305gr)&lt;br /&gt;Patronen: 7</German>
+            <Italian>Calibro: .408 CheyTac (305gr)&lt;br /&gt;Munizioni: 7</Italian>
+            <Czech>Ráže: .408 CheyTac (305gr)&lt;br /&gt;Nábojů: 7</Czech>
+            <Portuguese>Calibre: .408 CheyTac (305gr)&lt;br/&gt;Cartuchos: 7</Portuguese>
+            <Hungarian>Kaliber: .408 CheyTac (305gr)&lt;br /&gt;Lövedékek: 7</Hungarian>
+            <Japanese>口径: .408 CheyTac (305gr)&amp;lt;br /&amp;gt;装填数: 7</Japanese>
+        </Key>
        <Key ID="STR_ACE_Ballistics_5Rnd_127x99_Mag_Name">
            <English>12.7x99mm 5Rnd Mag</English>
            <French>Ch. 12.7x99mm 5Cps</French>
--- a/extras/airFrictionAnalysis.txt
+++ b/extras/airFrictionAnalysis.txt
@ -209,11 +209,19 @@ Optimal airFriction: 0.00108571
 ##########################################
 Ammo Class: B_408_Ball
 MaxRanges (m): [1600, 1600]
-MuzzleVelocities (m/s): [905, 915]
-Max. velocity difference (m/s): 19.47
-Max. drop difference (cm): 9.17
-Max. tof difference (ms): 22.0
-Optimal airFriction: 0.00038944
+MuzzleVelocities (m/s): [862, 872]
+Max. velocity difference (m/s): 28.15
+Max. drop difference (cm): 15.97
+Max. tof difference (ms): 77.0
+Optimal airFriction: 0.00044958
+##########################################
+Ammo Class: ACE_408_Ball
+MaxRanges (m): [1200, 1200]
+MuzzleVelocities (m/s): [1057, 1067]
+Max. velocity difference (m/s): 37.45
+Max. drop difference (cm): 7.45
+Max. tof difference (ms): 56.0
+Optimal airFriction: 0.00063655
 ##########################################
 Ammo Class: ACE_106x83mm_Ball
 MaxRanges (m): [1400, 1400]