Bloons Wiki
Bloons Wiki

Shots can pop through 7 layers of Bloon.
~ In-game description

Large Calibre is the second upgrade of Path 1 for the Sniper Monkey in Bloons TD 6. It allows the Sniper to deal 7 damage to bloons per shot instead of 4, enough to pop an entire Zebra Bloon or Lead Bloon, and can turn an entire Rainbow Bloon into 8 Red Bloons. When crosspathed with Shrapnel Shot, shrapnel pieces deal 2 damage instead of 1.

Combined with other upgrades, especially with Full Auto Rifle, Large Calibre's base damage alone makes a huge punch against MOAB-class bloon, and Elite Defender's MOAB-class damage bonus also increases from +3 to +4. With Bouncing Bullet, maximum bounce distance also increases from 40 to 50.

This upgrade costs $1,275 on Easy, $1,500 on Medium, $1,620 on Hard, and $1,800 on Impoppable.



The Sniper with Large Calibre's beret changes from red to purple, and gains a grey vest.

When pairing it with Path 3 upgrades, the beret will be colored purple on one side plus grey/orange (depending on upgrade) on the other side. Semi-Automatic will add a pair of earmuffs to the Sniper Monkey on top of the aforementioned changes. Full Auto Rifle turns the helmet of the Full Auto Rifle to purple.

Adding Night Vision Goggles will give the tower night vision goggles. Adding Shrapnel Shot will add an explosion symbol to the beret. Adding Bouncing Bullet will turn the army hat's coating purple. Adding Supply Drop will color the "bush hair" purple with black.


Large Calibre allows the Sniper Monkey to pop 7 damage to bloons per shot instead of 4. One single shot is enough to wipe out an entire Zebra Bloon or Lead Bloon, and can turn an entire Rainbow Bloon into 8 Red Bloons. If crosspathed with Shrapnel Shot, the shrapnel pieces deal 2 damage instead of 1. Bouncing Bullet maximum bounce distance increases from 40 to 50, and Elite Defender's MOAB-class damage bonus is increased from +3 to +4 when compared to an Elite Defender with Full Metal Jacket.

Targeting Priorities[]

Large Calibre targets bloons using the standard targeting priorities. It shoots a snipe attack.

  • First: Targets the first bloon visible within its range.
  • Last: Targets the last bloon visible within its range.
  • Close: Targets the closest bloon visible within its range.
  • Strong: Targets the strongest bloon visible within its range.

Can receive Camo Prioritization with Night Vision Goggles, allowing it to prioritize Camo Bloons over other types when active.


Updated as of Version 31.0. Listed prices exclude buffs, sacrifices, and Monkey Knowledge.
Purchase Sell
Costs Easy Medium Hard Impoppable Easy Medium Hard Impoppable
Upgrade (2-X-X) $1,275 $1,500 $1,620 $1,800 -
Total (2-0-0) $1,865 $2,200 $2,380 $2,640 $1,306 $1,540 $1,666 $1,848
Crosspath (2-1-0) $2,120 $2,500 $2,705 $3,000 $1,484 $1,750 $1,894 $2,100
Crosspath (2-2-0) $2,500 $2,950 $3,190 $3,540 $1,750 $2,065 $2,233 $2,478
Crosspath (2-0-1) $2,205 $2,600 $2,810 $3,120 $1,544 $1,820 $1,967 $2,184
Crosspath (2-0-2) $2,545 $3,000 $3,240 $3,600 $1,782 $2,100 $2,268 $2,520

This upgrade's prices (or included crosspath's prices) are affected by the following MK: MilitaryConscriptionIcon.png Military Conscription, AdvancedLogisticsIcon.png Advanced Logistics, BetterSellDealsIcon.png Better Sell Deals



The Large Calibre upgrade is a straightforward damage buff upgrade intended mostly for breaking down many layers of each weaker bloon in a single shot rather than pure extra DPS, although the same upgrade serves as a highly beneficial upgrade to the Sniper's pure DPS when paired with any of the Sniper's higher upgrades. Like most Path 1 Sniper upgrades, Large Calibre benefits the most from the increased attack speed that the entirety of Path 3 provides, allowing its high damage output to be fully utilized. The same upgrade is also helpful for Upper Path 2 upgrades such as Bouncing Bullet or Elite Sniper to more reliably pop multiple dense groups of bloons.


  • It is advised to use a 2-0-2 Large Calibre with this upgrade, since it lets it fire faster, making it far more efficient. It would be preferable to upgrade further towards either Deadly Precision against Ceramics or Semi-Automatic for pure DPS (especially against mid-game MOABs and BFBs).
  • It is better off using the Large Calibre upgrade for Rounds 35+, as a Full Metal Jacket is often sufficient for bringing down Zebras and Leads into more manageable bloons.
  • One 2-+1-0 Sniper is enough to take down one Camo Rainbow with a single shot or one Camo Ceramic in two shots. But to fully utilize the solo camo popping power of Snipers, try upgrading further to 2-3-0 Bouncing Bullet for even more reliability.

Version History[]

Large Calibre initially made little impact for Path 2 crosspathing, but later updates have buffed its interaction with crosspathing, including a base Sniper attack speed buff to compete over Path 3 crosspathing.

  • Buff 2-2-0 Large Calibre increases Shrapnel Shot fragment damage (1 → 2)
  • Buff Affected by base Sniper attack speed buff
  • Buff Affected by 1-2-0 Sniper buff
Elite Sniper bouncing bullet jump distance has been reduced so that it can't quite bridge small track splits so easily, however to change up use this lost distance has been added back to crosspathing. [...]
~ Ninja Kiwi, referring to Bouncing Bullet and Elite Sniper
  • Change Indirect buff to the 2-3-0 crosspath, restoring the bounce distance to 50 instead of 40 without Large Calibre


Official artwork[]


  • In BTD6, the Point Five Oh pose from BTD5 is the standard pose of the Sniper Monkey upgrade artworks of Tier 1 and Tier 2.
  • According to Ninja Kiwi's November 12th 2021 blog, the upgrade name "Large Calibre" is used instead of Point Five Oh because of "Bulletflation", a pun on "bullet" and "inflation". This may imply just a way to create more vagueness to specific bullet calibres.
  • According to Ninja Kiwi's 29th April 2022 blog, upgrades above Large Calibre don't have larger calibres but rather use more advanced technology.