Free Shipping on orders over $179
Talk to an Airgun Specialist 1-866-477-4867

JSB Diabolo Exact King Heavy .25 Cal, 33.95 gr - 150 ct

Available in .25
Only $13.99
  • Save $4.00 (22%)
  • 150 Count
  • 300 count
  • In Stock
  • Code: 546398-150 · $13.99 · .25 · 33.95 grains · 150 ct
Add to Cart
The new heavy weight when it comes to .25 JSB pellets, weighing in at 33.95 grains. The JSB King Heavy .25 caliber pellet was developed dueto the request of many airgunners with higher power PCP airguns looking for a little heavier pellet. The skirts on these are rather large so if you're having trouble with your gun loading them, pick up the King Heavy MKII instead.

JSB Diabolo Exact King Heavy Features
  • .25 caliber
  • 33.95 grains
  • Domed
  • 150 pellets
Read More
  • ManufacturerJSB
  • Caliber .25
  • Ammo Type Pellets
  • Ammo Weight 33.95 grains
  • Pellet Shape Domed/Round nose
  • Pellet Quantity 150 ct
Read More
Average Customer Review
5.028 Reviews
89% (25)
11% (3)
0% (0)
0% (0)
0% (0)
Write a Review
Sort by:Date Rating
By JosephUSADecember 30, 2019



By MikeUSAApril 10, 2018

I fired 25 rounds in the same hole @ 25 yards! unbelievable!. I can't wait to try these at longer ranges.

By JohnUSAApril 10, 2018

I just recently purchased an FX Streamline in .25 cal. fully shrouded barrel w/suppressor. At 100 ft. I can put a pellet on top of a pellet, no problem. Have you ever seen a wood rat's head explode at a 100 ft. ? You have a 25 cal. get a tin and try it, depending on the make and model of your weapon, it may be the best pellet you ever shot or the worst, we all know it varies from gun to gun, but try it, I hope you like it as I do mine, just make sure you describe the gun your using it in and how far away is your target, plus is it windy or calm. have fun.

It's all good................providing your gun like it.

none from me.

By DanielUSAMarch 5, 2018

As I have always said, JSB are the ones you want. Very uniform with no deformation. Get some and you won’t regret it.

By IanUSAJanuary 9, 2018

these pellets are of uniform size and they have penetrated both front and back of all the targets i've shot. I like shooting cheap shaving cream cans(big lots) , these go thru front and out the back.

By CharlesUSANovember 10, 2017

this pellet is very accurate for my rifle...a regulated hatsan 40 yards i was able to hit eight out of 10 paintballs glued to a 1 inch thick piece of cypress...resting my rifle on a coffee can on a bench....the pellet penetrated all the way through the cypress each shot......a better shot might have hit all 10....i like these pellets...

very accurate..i had no problem with the skirt when loading in my bullboss ..


By PaulUSAOctober 29, 2017

I tested the JSB Heavy in my Hatsan AT44S-10 QE they grouped great at 30 yards and at 85 yards they where hitting hard and very accurate. JSB really makes great pellets. I use the 25.39 grain JSB's a lot and these would be great too, especially for hunting and dropping larger small game. They hit nice and hard. Name: JSB Ex King Heavy 33.95 Shots: 30 Average: 702 FPS SD: 22 FPS Min: 661 FPS Max: 740 FPS Spread: 79 FPS Power Factor Average: 28 Power Factor Low: 26 Power Factor High: 30 Barometric Pressure: 30.2 inHg Temperature: 30F Weight: 40 grains

By JamesUSASeptember 16, 2017

I just thought mt AT44 liked JSB exact until I tried the Heavys. A 5 shot group is covered by a dime at 35 yards. This pellet gives me consistent energy from a non regulated gun.

accurate and delivers energy downrange

not locally available

By JohnUSASeptember 12, 2017

Awesome pellets, nice performance and weight


Kinda pricey

By ChrisUSAJuly 4, 2017

POI is very close to the standard Kings, but 8 gr heavier. However, the std Kings fly 200 fps faster from the same rifle (untuned Gladius Long). At 660 fps these came in at 30 fpe. If you want heavy pellets for close in pesting, buy these in the 300/350 cans - they are great for close in work where over penetration may be a concern.

Accurate & consistent

View Next


Login to ask someone who bought this product.
Create Account

Anyone know the BC of these?

asked Gerrit
View Next
Top Picks