Date: 14/11/2018 7:16
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JSB Match Diabolo Exact .177 Cal, 8.44 Grains, Domed, 500ct, 4.52mm

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JSB Match Diabolo.

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  • Description
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  • Customer reviews
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  • .177 caliber
  • 8.44 grains
  • Round nose
  • 500 pellets

In stock

Item Code: JSB177-EXACT [PY-P-261]

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other products by JSB

Caliber0.177" (4.5mm)
Ammo TypePellets
Ammo Shape
Head Size4.52 mm

other products by JSB

Average Customer Review

5.0 (346 reviews)

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4.0 4.0

5.0 5.0

3.0 3.0

By PiperFlyer from USA on 2018-08-21
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Things I liked: JSB does make a high quality, pellet that most guns like.

Things I would have changed: These are NOT 4.52mm. Most I checked are 4.5mm! But that is consistent because the 4.5mm are more like 4.4mm as they fit loosely in all my airguns but one, an old Daisy Powerline 1101WS. If you have a Gamo Swarm with auto loading magazine, FORGET about using these, even ones marked as 4.52mm. They will fall out as you cock the rifle. I sincerely wish that JSB would be more accurate in their sizing. The quality is good but accurate sizing is way off.

What others should know: These are popular pellets but they are skinny and some are so skinny that they feel loose in the breech. Pellets that do not seat snuggly can be flyers.

4.0 4.0

5.0 5.0

4.0 4.0

By Jody from USA on 2018-08-20
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Things I liked: These are another great pellet produced from JSB. However, in the tin that I received I found the pellet weights to vary from 8.4 grains to 8.6 grains. They grip the riflings extraordinary which produce tight patterns for me at the 25 - 35 yard ranges, but the pattern becomes more oval in the 50 yard plus ranges. I belive this is due to the weight differences from pellet to pellet. I have experienced a lot more variation in other brands of pellets, so I would recommend them. They will produce sub quarter sized groups in the 25 yard ranges out of the guns I tested them in.

Things I would have changed: At least in the tin I received, I would like to see a little more consistency in weight. They are not to the point of sorting pellets for me and I think JSB certainly has the capability to produce a pellet that is a little more consistent.

5.0 5.0

5.0 5.0

5.0 5.0

By longrifleJames from USA on 2018-08-15
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Things I liked: Exact is the only pellet that shoots tight groups in every gun I've tried. The 8.44 is an excellent weight for magnum spring powered guns for long distance shots on pests. It's not too heavy that it may blow out a piston seal on your gun while it does helps with penetration past 40 yards. Note the pellet comes in multiple sizes 4.52mm and 4.53mm. The diablo shape is super accurate and penetrates well. This is my favorite pellet of all time and I recommend that you give it a try for yourself.

Things I would have changed: I would not change a thing, obviously the experts at JSB are exact!

What others should know: A great article on the pyramdair blog site called "How does jsb make pellets". These pellets are sorted by weight and the scale is sensitive down to 0.0001g (WOW) then swagged to exactly the same size and thanks to one of 22 female inspectors, you can be reassured they are all visually inspected by hand to remove 2% rejects that could have been a darn flier that would mess up that perfect group you were shooting for all day!


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  • nathaniel from USA asked:

    Benjamim Maximus like these?

    • Paul from USA:

      It's hard to tell until you try them.

  • Charles from USA asked:

    What is the head size on these pellets?

    • Val from USA:

      according to specifications tab: 4.52mm

  • Tony from USA asked:

    I have a Marurder .177, that I'm getting ready for a match, a 25 meter one. I would love to get the best pellet for accuracy for this match, can you help me out here ? Thanks,Tony

    • Val from USA:

      These are good. Marauder also likes Baracudas. H&N has a sampler you can try: H&N Field Target Sampler Pack,... and see which head sizes work best in yours

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