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JSB Diabolo Exact Monster .177 Cal, 13.4 gr - 400 ct

JSB Diabolo Exact Monster .177 Cal, 13.4 gr - 400 ct

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  • List Price $18.99
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  • Code: py-p-897 · 0.177 cal · 13.4 gr · 400 ct
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The weight of the Monster Exact Diabolo pellets have been chosen to fit the most powerful air rifles currently available on the market. It is a really heavy weighted pellet that is stable even at higher power levels. A top choice for airgun hunters. Also check out the new Diabolo Beast if you're looking for something even heavier.

JSB pellets are considered to be one of the premier pellets made today. These .177 caliber Monster Exact pellets weigh in at 13.4 grains- which will do the job if you like to hunt or do pest control with magnum air rifles or precharged pneumatic airguns.

JSB Diabolo Exact Monster Features
  • .177 cal
  • 13.4 grains
  • 4.5 mm diameter
  • Cylindrical
  • 400 pellets

Warning: Important information for California residents
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  • ManufacturerJSB
  • Caliber0.177 cal
  • Ammo Weight13.4 gr
  • Pellet ShapeDomed
  • Pellet Quantity400
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JSB Diabolo Exact Monster .177 Cal, 13.4 gr - 400 ct
11 Reviews
91% (10)
9% (1)
0% (0)
0% (0)
0% (0)
100% Recommend this product (11 of 11 responses)
By Death
JSB Diablo 13.4 gr pellet used with an RWS Diana Magnum 350 Springer
October 31, 2018
Excellent weight for a .177 pellet. Must have a 1200 fps or more gun to sling this out there.
It almost turns a .177 into a .22 pellet gun and your kill ratio will go up.
ProsExcellent for squirrel / Rabbit / Crow. One shot and "down goes frazier".... Excellent Penetration from 30 - 40 yards.
ConsCant offer anything up here, never have experienced a problem.
Best UsesVarmit control within the confines or a .177 pellet.
By Joe P.
Not for every gun, but for the guns that like them these are the bomb !
September 18, 2018
As with any gun, there are always going to be an ideal range of weight, diameter and balance that will determine the best pellet for that gun. For my guns that have the necessary power to propel this pellet there's no question but that these are the choice when the shot counts. .177 rounds are notoriously vulnerable to wind but the extra heavy weight and more symmetrical skirt lessen the effect of wind although they do increase the angle of incidence to the POI. However the later is a controllable factor where as the former (the wind) is a uncontrolled variable. The bottom line is, if you're going accuracy at distance and have a rifle capable of sending a projectile of this weight down range efficiently, you'll be very pleased with how these pellets perform.

Why 4 stars instead of 5 ? ..... Cost, plain and simple. These are expensive pellets but well worth the cost when the shot is on the line.
ProsGood QC provides minimal variances in weight and mostly occlusion free heads.
ConsYour wallet will think you're shooting rimfire rounds.
Best UsesTarget shooting at distances of 50 meters or more.
By Joe
Manteno, IL
consitance shooting
April 19, 2018
I use theese heavier ammos types to zero rifles and I pull them out when I want tight shot groups.
Prosyou can maximize for foot pounds downrange with pellets like theese
Best Usesaccuracy, hitting the same point down range
By Chris
Great killing pellet for small game.
April 5, 2018
I have been shooting these through a Gamo Silver Shadow 1ooo and they are accurate up to about 30 feet. Shooting beyond that they lose their velocity very quickly and become not so accurate. No bent pellets and very clean.
ProsAccurate, hard hitting, clean pellets.
ConsVelocity drops quickly after 30 feet.
Best UsesSmall game(birds, squirrels, etc.) at anything up to 30 feet.
By Kelly T.
Plano, TX
Best Choice for Umarex Gaunlet
February 27, 2018
These pellets produce a consistent one hole groups at 20 yards in my Umarex Gauntlet.
ProsAccuracy, cost at $14.49 plus discount if purchasing 4 packs at a time( fourth free)
ConsThey may be changing this pellet design soon for the better or worse? I stocked up on the old style, and have not tried the new style.
By dan
island lake, IL
Great Pellet
February 14, 2018
I use these in my Gauntlet
Prosgood packing and good quality control ( no bad pellets )
By David H.
Francisco, IN
Great hunting pellet
September 5, 2017
Great for long range accuracy and penetration
ConsTin needs redesigned
By Mike
Great pellets to tame the high powered 177 guns that shoot most pellets over the 1000 fps mark.
July 9, 2017
I got these pellets to shoot in my high powered 177 cal guns since the extra weight slow the velocity down so its under the transonic range to keep the accuracy consistent. My B51 loves these heavy pellets and shoots them right in the sweet spot of 890 to 900 fps.
ProsVery consistent and accurate pellets in higher powered 177cal guns that overpower lighter pellets and shoot the light pellets up in the transonic range which destabilizes the pellets flight causing accuracy to suffer. These also retain good energy down range to provide good knockdown power out at longer ranges when hunting. Also help buck the wind when shot in the high 800s to low 900s velocity ranges. The dumbbell shape really makes this pellets stable out to long ranges.
ConsThe only con I see is they need to come in 500 count tins.
By Cheng L.
New York
JSB 13.4
April 28, 2017
I decided to buy this 13.4 grain jsb heavy pallet base on the good review by the previous buyers just to prove them right and they are right! My synth Rod loves these pallets more than any pallets that I've bought.I only use this one for my every days shooting now and they work like charm...Hit hard and on target.I only have limited range of 25 yards and these pallets will hit a nickel almost every times...good enough for me.
ProsGood quality, accurate,and hit hard and very good for small hunting games.
ConsCan 't find any.
By bobby
good match with gamo hunter extreme
March 17, 2017
only took 5 shots to sight in new gun and scope to hit a bull on the target. the pellets went through new 1/2" osb plywood.need more backstop. the squirrels that attack my garden are going to have a bad day.
Prosgreat packaging,will buy again.
By John
Lilburn, GA
Great pellets
February 10, 2017
I love these pellets, They are the most accurate and hard hitting I have found for my .177 Benjamin Discovery. They do an excellent job of dispatching pest squirrels and english sparrows.
Prosaccuracy and weight
ConsScrew on lid would be nice.
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