Drop chances

ItemStage 10Stage 50Stage 100Avg count
Shotgun AP Slug (Ammo)–88%84%20.59
HiPower 9mm Ammo–88%47%73.11
HiPower 7.62mm Ammo–87%47%60.52
Gunpowder75%75%75%66.08
Bullet Tip76%75%75%66.06
Buckshot75%75%75%65.91
Bullet Casing75%75%76%65.56
HiPower .44 Magnum Ammo–66%47%28.11
Duke's Casino Token43%44%44%2684.17
Silver Nugget31%30%30%3.28
Old Cash30%30%30%96.81
Gold Nugget22%22%21%1.03
Raw Diamond13%13%13%0.33
Steel Sledgehammer Parts4.6%8.3%9.2%0.21
Steel Club Parts4.6%8.2%9.1%0.2
Baton Parts4.5%8.2%9.2%0.2
Steel Spear Parts4.5%8.1%9.1%0.2
Steel Knuckles Parts4.4%8.1%9.1%0.2
Machete Parts4.6%8.1%9.2%0.2
Shotgun Parts4.4%7.7%8.6%0.15
Bow / Crossbow Parts4.5%7.7%8.4%0.15
Rifle Parts4.5%7.6%8.5%0.15
Machine Gun Parts4.7%7.5%8.6%0.15
Robotics Parts4.6%7.5%8.4%0.15
Rocket Launcher Parts4.5%7.4%8.8%0.15
Handgun Parts4.6%7.4%8.5%0.15
Baseball Bat–4.6%1.2%0.05
Iron Sledgehammer–4.5%1.2%0.05
Iron Knuckles–4.5%1.2%0.05
Hunting Knife–4.5%1.2%0.05
Iron Spear–4.4%1.1%0.04
KV-47 Machine Gun–3.4%0.83%0.03
Robotic Sledge–3.3%0.86%0.03
Double Barrel Shotgun–3.2%0.85%0.03
Pistol–3.2%0.87%0.03
Hunting Rifle–3.2%0.81%0.03
Molotov Cocktail (Ammo)3.8%1.6%0.38%0.03
Pipe Bomb (Ammo)3.7%1.6%0.36%0.04
Wooden Bow–1.6%0.39%0.02
Iron Crossbow–1.6%0.40%0.02
modMeleeWoodSplitter1.1%1.2%1.1%0.01
modMeleeWeightedHead1.0%1.2%1.1%0.01
modMeleeStructuralBrace1.0%1.1%1.1%0.01
modMeleeGraveDigger1.0%1.1%1.0%0.01
modMeleeFortifyingGrip1.1%1.1%1.0%0.01
modMeleeSerratedBlade1.0%1.0%1.1%0.01
modMeleeClubBurningShaft0.97%0.99%0.97%0.01
modMeleeClubBarbedWire1.0%0.98%0.96%0.01
modMeleeBunkerBuster1.1%0.93%0.99%0.01
modGunTriggerGroupAutomatic0.80%0.83%0.73%0.01
modMeleeClubMetalSpikes0.67%0.81%0.75%0.01
modMeleeIronBreaker0.76%0.81%0.75%0.01
modGunMeleeRadRemover0.88%0.80%0.86%0.01
modGunBowPolymerString0.78%0.79%0.72%0.01
modMeleeErgonomicGrip0.68%0.79%0.79%0.01
modMeleeClubMetalChain0.70%0.73%0.68%0.01
modMeleeTemperedBlade0.72%0.72%0.73%0.01
modMeleeDiamondTip0.74%0.72%0.72%0.01
modGunScopeLarge0.79%0.72%0.75%0.01
modGunBipod0.36%0.42%0.33%0
modGunFlashlight0.38%0.42%0.38%0
modGunMeleeTheHunter0.41%0.39%0.39%0
modGunChoke0.35%0.37%0.40%0
modGunScopeSmall0.42%0.36%0.34%0
modGunForegrip0.39%0.36%0.35%0
modGunMagazineExtender0.39%0.35%0.36%0
modGunDrumMagazineExtender0.41%0.35%0.40%0
modGunDuckbill0.34%0.34%0.38%0
modShotgunSawedOffBarrel0.36%0.33%0.35%0
modGunTriggerGroupSemi0.39%0.33%0.42%0
modGunCrippleEm0.26%0.31%0.31%0
modGunMuzzleBrake0.33%0.31%0.37%0
modGunReflexSight0.25%0.30%0.27%0
modGunShotgunTubeExtenderMagazine0.27%0.30%0.32%0
modGunRetractingStock0.22%0.28%0.27%0
modGunTriggerGroupBurst30.23%0.28%0.27%0
modGunSoundSuppressorSilencer0.27%0.27%0.29%0
modGunBarrelExtender0.29%0.27%0.26%0
modGunBowArrowRest0.26%0.27%0.25%0
modGunScopeMedium0.25%0.26%0.32%0
modGunLaserSight0.28%0.25%0.34%0
9mm Ammo92%––0
Shotgun Shell (Ammo)92%––0
7.62mm Ammo92%––0
Pipe Baton14%––0
Pipe Rifle7.3%––0
Knuckle Wraps14%––0
Pipe Machine Gun7.3%––0
Primitive Bow7.5%––0
Bone Knife14%––0
Pipe Shotgun7.3%––0
Pipe Pistol7.4%––0
AP 9mm Ammo––67%0
AP .44 Magnum Ammo––68%0
Stun Baton––1.7%0
AP 7.62mm Ammo––68%0
Grenade (Ammo)––0.61%0
Steel Spear––1.8%0
Tactical Assault Rifle––1.4%0
Steel Knuckles––1.6%0
.44 Magnum––1.5%0
Rocket Frag (Ammo)––0.12%0
Rocket HE (Ammo)––0.15%0
Lever Action Rifle––1.4%0
Pump Shotgun––1.5%0
Steel Club––1.6%0
Stick of Dynamite (Ammo)––0.64%0
Machete––1.5%0
Robotic Turret––1.4%0
Compound Bow––0.68%0
Steel Sledgehammer––1.6%0
Compound Crossbow––0.69%0

Average count per open at loot stage 50. From 40,000 simulated opens per stage; perks that raise loot are not counted.