There are problems with Dynamic Loadout and collision detection for bullets.
Some weapons have incorrect collision (these will pass through any bullets). At least these are confirmed:
"PylonRack_1Rnd_Missile_AA_04_F" "PylonMissile_1Rnd_Missile_AA_04_F" "PylonRack_1Rnd_AAA_missiles" "PylonMissile_1Rnd_AAA_missiles" "PylonRack_1Rnd_GAA_missiles" "PylonMissile_1Rnd_GAA_missiles" "PylonRack_1Rnd_Missile_AGM_02_F" "PylonRack_1Rnd_LG_scalpel" "PylonMissile_1Rnd_LG_scalpel" "PylonRack_3Rnd_LG_scalpel" "PylonMissile_1Rnd_Bomb_04_F" "PylonRack_1Rnd_Missile_AA_03_F" "PylonMissile_1Rnd_Missile_AA_03_F" "PylonRack_1Rnd_Missile_AGM_01_F" "PylonMissile_1Rnd_Bomb_03_F" "PylonMissile_Missile_AMRAAM_C_x1" "PylonRack_Missile_AMRAAM_C_x1" "PylonRack_Missile_AMRAAM_C_x2" "PylonMissile_Missile_AMRAAM_D_x1" "PylonMissile_Missile_AMRAAM_D_INT_x1" "PylonRack_Missile_AMRAAM_D_x1" "PylonRack_Missile_AMRAAM_D_x2" "PylonMissile_Missile_BIM9X_x1" "PylonRack_Missile_BIM9X_x1" "PylonRack_Missile_BIM9X_x2" "PylonMissile_Missile_AGM_02_x1" "PylonMissile_Missile_AGM_02_x2" "PylonRack_Missile_AGM_02_x1" "PylonRack_Missile_AGM_02_x2" "PylonMissile_Bomb_GBU12_x1" (partly) "PylonRack_Bomb_GBU12_x2" "PylonMissile_Missile_AA_R73_x1" "PylonMissile_Missile_AA_R77_x1" "PylonMissile_Missile_AA_R77_INT_x1" "PylonMissile_Missile_AGM_KH25_x1" "PylonMissile_Missile_AGM_KH25_INT_x1" "PylonMissile_Bomb_KAB250_x1" "PylonMissile_1Rnd_BombCluster_01_F" "PylonRack_2Rnd_BombCluster_01_F" "PylonMissile_1Rnd_BombCluster_02_F" "PylonMissile_1Rnd_BombCluster_02_cap_F" "PylonMissile_1Rnd_BombCluster_03_F" "PylonRack_2Rnd_BombCluster_03_F"
Some weapons have incorrect hit materials (dirt but not metal).
"PylonWeapon_2000Rnd_65x39_belt" "PylonRack_20Rnd_Rocket_03_HE_F" "PylonRack_20Rnd_Rocket_03_AP_F" "PylonRack_19Rnd_Rocket_Skyfire"