The Call of Duty: Warzone and MW3 October 1 patch notes have officially arrived. While the update has made small alterations to Warzone, Modern Warfare 3 has received significant tweaks. From the M13C buff to the DTIR 30-06 nerf, there are a plethora of weapon-balancing changes. Furthermore, in Warzone, downing enemies will now count towards progression of the Terriball Challenge.If you want to learn about the enitre Warzone and MW3 October 1 patch notes, keep reading.Warzone October 1 patch notesHere are all the changes in Warzone's October 1 update:Rebirth Island changes (Purgatory)Terriball ChallengeDowning enemies now counts towards progression of this challenge.Crossbow changesAdjustments:Increased bolt velocity to 200m/s, up from 110m/s.Decreased bolt gravity influence by 70%.Brightblaze 20” BoltsRemoved aim down sight spread.Blastcap 20” BoltsRemoved aim down sight spread.FTAC Caustic 20” BoltsRemoved aim down sight spread.WeaponsFixed an issue preventing new contracts from appearing after the second circle.Fixed an issue allowing players to earn more than intended experience from decoy grenades in the Purgatory mode.Fixed an issue preventing the execution prompt from appearing when behind an enemy.Modern Warfare 3 October 1 patch notesHere are all the changes in Modern Warfare 3's October 1 update:MultiplayerMapsShipmentFixed an issue causing inconsistent spawn availability between the map variants.Based on player feedback supported by our analytics, spawn quality improved by approximately 10% on Shipmas compared to Celship and Ghost Ship. Today’s changes ensure that all variants of Shipment utilize the improved selection of available spawns.SporeyardFixed an exploit allowing players to reach unintended areas near the Red Warehouse.Weapons & AttachmentsAssault RiflesM13C (MWII)Increased maximum damage from 31 to 32 (+3%).Within its maximum damage range, the M13C is now capable of a 4-shot kill if at least one bullet is a headshot.Battle RiflesDTIR 30-06Decreased lower torso damage multiplier from 1.3x to 1x.ShotgunsKV Broadside (MWII)Increased maximum damage range from 2.9m to 3.6m (+22%).Increased near-medium damage range from 3.3m to 4.3m (+31%).Lockwood 300 (MWII)Increased maximum damage range from 1.8m to 3.3m (+86%).Expedite 12 (MWII)Increased maximum damage range from 2.5m to 3.6m (+40%).Increased near-medium damage range from 4.1m to 5.1m (+25%).Bryson 800 (MWII)Increased near-medium damage from 34 to 42 (+24%).Increased medium damage from 25 to 30 (+20%).Increased maximum damage range from 3.3m to 4.1m (+23%).Increased near-medium damage range from 5.8m to 7.1m (+22%).Bryson 890 (MWII)Increased near-medium damage from 34 to 42 (+24%).Increased maximum damage range from 3.1m to 3.8m (+25%).Also read: When does MW3 and Warzone Season 6 end?Marksman RiflesCrossbow (MWII)Increased bolt velocity from 110m/s to 200m/s (+81%).Decreased bolt gravity influence by 70%.Increased neck damage multiplier from 1.2x to 3x.Brightblaze 20” BoltsRemoved aim down sight spread.Blastcap 20” BoltsRemoved aim down sight spread.FTAC Caustic 20” BoltsRemoved aim down sight spread.SAB-B 50 (MWII)Increased maximum damage from 120 to 130 (+8%).Increased near-medium damage from 90 to 120 (+33%).Decreased maximum damage range from 17.8m to 7.6m (-57%).Decreased near-medium damage range from 44.2m to 17.8m (-60%).Added medium damage range, 90 damage up to 44.2m.Decreased lower torso and upper arm damage multipliers from 1.26x to 1.2x.HandgunsP890 (MWII)Increased maximum damage from 52 to 59 (+13%).Increased minimum damage from 37 to 44 (+19%).Decreased maximum damage range from 9.1m to 4.6m (-50%)..50 GS (MWII)Increased maximum damage from 96 to 116 (+22%).Increased near-medium damage from 68 to 95 (+40%).Decreased maximum damage range from 17.3m to 8.6m (-50%).Decreased near-medium damage range from 35.1m to 17.3m (-51%).X12 (MWII)Increased maximum damage from 39 to 47 (+20%).Increased near-medium damage from 30 to 39 (+30%).Increased minimum damage from 28 to 30 (+7%).Akimbo X12 Rear GripIncreased damage penalty from -20% to -40%.Basilisk (MWII)Increased head damage multiplier from 2x to 2.5x.Decreased medium damage range from 35.1m to 33m (-6%).Removed far-medium damage range.The Basilisk is now capable of a 1-shot kill to the head up to its medium damage range.FTAC Siege (MWII)Increased maximum damage from 24 to 26 (+8%).Increased near-medium damage from 20 to 24 (+20%).Increased medium damage from 18 to 20 (+11%).Increased minimum damage from 15 to 18 (+20%).GS Magna (MWII)Increased minimum damage from 36 to 40 (+11%).Increased lower torso damage multiplier from 1.05x to 1.15x.Increased upper leg, lower leg, and foot damage multipliers from 0.8x to 1x.X13 Auto (MWII)Decreased horizontal recoil from 7.2deg/s to 6.5deg/s (-9%).Decreased vertical recoil from 31.7deg/s to 28.4deg/s (-10%).Increased maximum damage from 25 to 29 (+16%).Increased near-medium damage from 22 to 25 (+14%).Increased medium damage from 18 to 22 (+22%).Increased minimum damage from 15 to 20 (+33%).KillstreaksGuardian-SCTurret can now be deployed while the player is standing in water.That covers everything you need to know about the Warzone and MW3 October 1 patch notes. Check out our other Call of Duty related news and guides:Forgotten Warzone skin is reportedly making players immune to aimbotWarzone September 26 playlist update: Duos, Trios removal explainedHow to unlock The Entity Ultra Skin in Warzone and MW3