"Was that a high-explosive laser-guided magic-bullet or... were you just lucky?"

Many Fallout 4 fans felt that the Bloody Mess Perk wasn't very useful in the vanilla game.
So I took a dive into the Perk's game files and made some welcomed changes.

Now your chances of dismembering and exploding enemies are increased significantly.
Improved Perk 4 Nearby Effect with Force Effects and Extended Range.
Increased Perk 3 & Perk 4 Damage Multipliers.

The Bloody Mess Perk is now as useful and satisfying as it was always meant to be, without being too overpowered.
It allows the game to showcase it's capabilities and adds some variety to Fallout 4's gun-play.
It will save your lucky ass during an ambush and deliver more of those Epic Fallout-style conflict resolutions.

3 Different files to choose from to fit anybody's game-play style.

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3 versions of BIGGER BETTER BLOODY MESSES 2.0 to choose from:

B.B.B.M. 2.0 - Extreme
67% chance that the Shrapnel Effect will dismember, explode, cripple, or kill your enemies.

B.B.B.M. 2.0 - Balanced
35% chance that the Shrapnel Effect will dismember, explode, cripple, or kill your enemies.

B.B.B.M. 2.0 - Vanilla
10% chance that the Shrapnel Effect will dismember, explode, cripple, or kill your enemies.


=============  Changes to Perks   =============

Bloody Mess Perk 3
Mod = +18% Damage  ->  Vanilla = +15% Damage
Bloody Mess Perk 4
Mod = +25% Damage  ->  Vanilla = +15% Damage

============   Changes to Game-play   ============

=============      Global      ===========
Chance of PLAYER Dismemberment on Death
Mod = 90% -> Vanilla = 20%

=============      Bloody Mess Perk       ===========
Added a Force Effect to make Limbs fly farther
Mod = 300units -> Vanilla = 0
Chance to EXPLODE a Crippled Limb on Kill-shot
Mod = 67% -> Vanilla = 25%
Chance to DISMEMBER an Intact Limb on Kill-shot
Mod = 50% -> Vanilla = 15%
Chance to EXPLODE an Intact Limb on Kill-shot
Mod = 50% -> Vanilla = 25%
Chance to EXPLODE a Limb in V.A.T.S. on Kill-Shot
Mod = 67% -> Vanilla = 0%
Chance to EXPLODE a Torso on Kill-shot
Mod = 75% -> Vanilla = 25%
Extended RANGE of the Bloody Mess Nearby Spell AKA Shrapnel Effect
Mod = 60UnitArea -> Vanilla = 25
===========================      Bloody Mess Perk 4      ===========================
===EXPLAINED===

The design of the "Bloody Mess Nearby Spell" is a little complicated but also very interesting.
It is cool to see remnants of Skyrim code in Fallout, but for the sake of Fallout Lore I am going to refer to it as the Shrapnel Effect.
I will attempt to explain it the same way I understand it.

Triggering the Shrapnel Effect is based purely on LUCK, pun intended. 

Whenever you kill an enemy, you roll the dice to determine IF a Dismember or Explode Animation is applied.
Upon winning a Dismember or Explode Animation, the game rolls the dice on each enemy in the area to determine
IF the Shrapnel Effect will dismember, explode, cripple, kill, or ignore other enemies in the area.

In the vanilla game, the chance was set pretty damn low at 10%.

B.B.B.M.-2.0 puts the odds back in your favor!

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Fun Facts!!!

You AND your companion share your Bloody Mess Shrapnel Effect!
Their bullets roll for the Dismember, Explode and Shrapnel Effects as well.
This allows them to be useful in combat.
So give them an automatic and make it rain!

If you line up enemies, you can kill 2+ enemies with one round!
Find the perfect angle and roll the dice to make each round count.

Grenades & Weapons with the Explosive Legendary Modification have a higher chance of triggering the Shrapnel Effect!
Because, f##k yeah, that's why.

Robots, Animals and Insects are ALSO affected by this Perk!
3 Deathclaws, 1 bullet.

Shrapnel Effect doesn't discriminate & ignores the HP of nearby enemies!
Getting PWN'd by ghouls, bloatflys, radroaches and raiders at the same time?
Shrapnel Effect doesn't give a ####. They are ALL going down regardless of remaining HP.

I expanded the Area Of Effect from a 25 unit area to a 60 unit area!
The new AOE essentially turns your enemies into luck propelled grenades.

I added a small Force effect to make body parts fly farther and higher!
Go ahead. Send those ghouls into space.

I added a 90% chance that YOU WILL BE DISMEMBERED upon your death!
Because you probably deserved it ;)

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FAQ

"Do we need to remove then add the perks again if we already have 'em ? or just install & play ??"
Nope. Alteration to your character will not be necessary.
Simply overwrite the Bloody Mess Perk's default bonuses with B.B.B.M. using
N.M.M and check ranks 3 & 4 of the perk chart when you open the
game. If the perk description changed to +18% DMG (Rank 3) and +25% DMG
(Rank 4), then the changes have been applied correctly.

"Will shooting limbs off cause the other enemy's limbs to be dismembered?"
It really depends on your Luck, pun intended.
The game script rolls the dice and determines if it will inflict the same
  type of injury. So if you shoot an enemy in the leg and WIN that dice
roll, everybody elses kneecaps will get blown off.
If you lose that roll, it may perform a General Dismemberment.

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Installation & Compatibility

Simply install the file with Nexus Mod Manager the same way as other .esp files.
Bigger Better Bloody Messes is a very small file so it works Great with texture mods like:

Fallout IV Gore Overhaul 3.0 by Nero1n
Enhanced Blood Textures by dDefinder
Moar Gore by Troy Irving
(BBBM increases the chances of limb explosions, but these mods make the gore and body parts more detailed)


Load this BEFORE any Blood Texture Mods

Load this AFTER any Explosion Mods like:
Mega Explosions by Meltus

Load this AFTER any other Perk mods

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Performance

Due to the sudden generation of objects and particles during the Shrapnel Effect,
you may have a temporary 1%-15% hit in frame rate depending on your rig.
I stress-tested this mod with 60 other various mods enabled, and ran the effect on dozens of NPCs.
I experienced AT MAXIMUM a 15% hit to my FR. [GTX 970]
The game itself rarely generates that many enemies so your FR should be fine during normal game-play.

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Known Bugs

Some ghouls damaged by the Nearby Effect may run around with their heads blown off.
XD

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Future Updates

1. Apply your Critical Weapon Effect to Bloody Mess Shrapnel event.
The goal is to turn entire groups of enemies into Goo piles or Ash Piles.
2. Apply 3D Ricochet sound effect when Bloody Mess Shrapnel event occurs.
The goal is to add an audio cue for your "magic bullet/shrapnel."
3. All Critical Attack kill-shots trigger Bloody Mess Shrapnel Events.
Outnumbered? The goal is to use your critical in V.A.T.S and have a guaranteed Magic Bullet.

*Plugin made with FO4Edit*