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JSB Diabolo Exact Heavy .177 Cal, 10.34 gr - 500 ct

Only $21.99
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  • In Stock
  • Code: 300074 · $21.99 · .177 · 10.34 grains · 500 ct
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JSB 10.34-grain pellets are manufactured in Bohumin, Czech Republic by Joseph Schulz, are considered by many to be the most accurate pellets available in the entire world. The Exact Diabolo is an intermediate weight, round nose pellet that will deliver improved flight stabilization and fine accuracy. These pellets can be used for both air rifles and pistols and were designed specifically for long range shooting and hunting.
  • Caliber: .177
  • Weight: 10.34 Grains
  • Nose: Round Nose
  • Quantity: 500 Count
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  • ManufacturerJSB
  • Caliber .177
  • Ammo Type Pellets
  • Ammo Weight 10.34 grains
  • Pellet Shape Domed/Round nose
  • Pellet Quantity 500 ct
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Average Customer Review
5.050 Reviews
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By Darcy in PortlandFebruary 5, 2023 Verified Purchase

I am currently breaking-in my Gamo Swarm Magnum 10X Gen3 .177 cal rifle, so this evaluation may be a tad premature. But since purchasing this rifle only a few months ago I have shot sample-groupings of 14 different types and brands of pellets at "back yard" range of about 25 yards. Besides reducing the neighborhood's squirrel over-population in the first few weeks, I have also become a bit obsessed with the ballistic properties of all varieties of pellets. SO FAR, with everything being equal, I have found THESE PELLETS to give the MOST CONSISTENT GROUPING, and create the most visible damage of any pellet tested. With the power of this Gamo MAGNUM, many of the various specialty light weight alloy pellets punched through a panel of welding steel, but the JSB EXACT pellets were the only SUBsonic pellet that really made a messy punch hole. Great bang for the buck - so to speak. Consistent accuracy and punch... PLUS, yes, it fits beautifully in my 10-shot mag.

Consistently accurate (very good grouping). Good pellet to sight-in a scope with. Recommended by Greg at Airgun Depot (tech support). Thanks Greg! You were right on!


By ShaobiaoUSAJanuary 23, 2023 Verified Purchase

Very well made. Consistent for the yards I used. In my great favorite list now.

By russ October 10, 2021

Amazing pellet for the Gamo Bone Collector. Headshot dropped a 25 lbs. whistle pig at 40 yards.

Wouldnt change a thing

By GavinUSAMarch 31, 2021

Thanks Airgundepot for replacing them free of charge. I've done business with Airgundepot for many years and they are the best! They are very knowledgeable of the products they sell and if you have any problems they will help resolve them fast. Thanks Airgundepot.

JSB is the best pellets I have ever shot.

This tin was about half deformed beyond shooting.

By BruceUSAJanuary 6, 2020

These pellets are great for long distance shooting out of my Umarex Gauntlet 177 cal. I can hold a 1" group at 50 yards.

Very good quality pellet

By WilliamUSAJanuary 3, 2020

Very good pellets. Very accurate in my Sig Sauer ASP20.

By DonaldUSADecember 11, 2019

There great

By berton jUSADecember 9, 2019

Great shooting pellet in my rws diana 34 and my rws 460. 30 ft groups are around 1/4 inch. scatters somewhat in my stoeger. all are.177. no complaints at all.

couldn't find any defective pellets.

needs a screw top can.

By ToddUSASeptember 6, 2019

Just try them, all my springers love them!

By JosephUSAJune 1, 2019


Accurate and great for paper

A little light for hunting anything larger than grey squirrels.

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I need silent...........neighbors !!! How loud are these? I will be using a Gamo PT 85 air pistol. Thanks.

asked Mike

What is expected date of these pellets being in stock?

asked Terry

Terry, Unfortunately, we do not have any lead time on when this particular pellets will be back in stock. However we could drop ship them from the manufacturer. Let us know if you have an order already in or place an order and we can get these pellets out to you. Sincerely, Airgun Depot Customer Care Team

Scott from USA

I have a Ruger Airhwok Rifle and it seems not to be very accurate. At 25 yards, it hits allover the target but never a 1" pattern. I have tried six different brands of pellets and I can not seem to find one that will work properly. I guess I have bad luck, since this is my second rifle and I still can't get it working properly. That's why I'm looking for a good pellet, one that will make me enjoy my shooting.

asked Joseluis Curiel

The reason you have not found an accurate pellet is because you have a spring powered air gun. Most spring powered air guns are hold sensitive which means they will shoot differently depending on how you hold them. You always shoot a spring powered air gun with the artillery hold. You hold the gun loosely and let it recoil. This pellet is very good and I get 1/2" groups at 30 yards with a RWS 850.

Levi from USA
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