So...I changed the settings of the Miniguns for myself............and share ,maybe you feel the same.
Weapon - INAM-Impact Data Set - BulletHeavyImpactSet
to
Weapon - INAM-Impact Data Set - BulletImpactSet
There are two files:
Smaller Minigun Decals - MIH = Minigun in Hand (If you like the huge bullet holes from the sky)
Smaller Minigun Decals - MIH VM = Minigun in Hand + Vertibirds Miniguns
This is simple tweak so if you use FO4Edit and you have Merged patch....Just copy the tweaks and you can uninstall this mod.