PY-P-1279
$19.99
List Price $22.99Save $3.00 (13%)1-year limited warranty
Earn 20 Bullseye Bucks
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Estimated in-stock date 11-01-21
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WARNING This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov 
MkII pellet has a skirt diameter that is only 6.5mm, making the pellet work a little more reliably in some rotary magazines.
Please note: The only difference between the original King Heavy and the King Heavy MkII pellets is the outer diameter of the skirt. This dimension on the original MKI pellets are 6.68 - 6.70 mm while the MKII pellets measure 6.58 - 6.60 mm. The appearance of the skirt or back of the pellet can vary.
Item Code: JSB-10253002 [PY-P-1279]
| Caliber | .25" (6.35mm) |
| Ammo Type | Pellets |
| Weight | 33.95gr |
| Ammo Shape |  |
| Head Size | 6.35 mm |
| Skirt Size | 6.50 mm |
| Length | 8.74 mm |
| Quantity | 300 |
| Ballistic Coefficient | 0.054 A measure of the potential to retain velocity. Changes as velocity changes. A pellet or bullet with a high BC (a large number) will continue to fly much longer than a pellet or bullet with a low BC. |
| Muzzle Velocity | 885 fps |
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5.0 5.0
4.0 4.0
5.0 5.0
Verified Purchase
Very consistent
Things I would have changed:The tin can. Hard to open and close
What others should know:Very good shooting pellet
2.0 2.0
5.0 5.0
5.0 5.0
Verified Purchase
The pellets are great. Bought 36 cans of .25 cal slow turnaround Bought 36 cans of .30 cal and now 7 weeks later they still have not shipped. Starting to think pyramid air is not the place to get pellets.
Things I would have changed:Honest shipping estimates
What others should know:Stock up because it is going to get worse.
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What is the diference between Exact diabolo on the box under sign...M and Cz Sir..
What is the difference between the JSB heavy and the mk2
Sorry my 1st answer had skirt size reversed. The correct skirt diameters: JSB Heavy - 6.65mm & MKII - 6.50mm ~~~Both are same length, weight, and 6.35mm head
JSB Heavy - head 6.35mm / skirt 6.5mm & MKII - head 6.35mm / skirt 6.65mm
MkII pellet has a skirt diameter that is only 6.5mm, making the pellet work a little more reliably in some rotary magazines.
So what's the difference between the original 33.95 and this ones then? I will have a Fx impact that I wanted to buy from pyramid air, but you don't have it.... And I have been told that MK2 work better for the impact.
In my Impact the Mk11 works much better. There has been a lot of trouble with Impact magazines cycling pellets and my magazine is no different, but it does cycle the Mk11 much better than the original 33.95 pellets and they shoot better also. Single loaded I can throw the MK11 pellets in a little over a half inch at 75 yards with the Impact. The difference between the way the MK11 and the 25.39 grain JSBs are night and day least in my barrel. Have heard from a lot of my friends at Airgun Nation that they just get better accuracy overall from the MK11. You may have to play with the valve adjuster, the regulator and the power wheel and the hammer spring tension, but I'm sure it will probably work out for you, just requires a little patience.
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5.0 5.0
5.0 5.0
5.0 5.0
Verified Purchase
Accuracy!
Things I would have changed:Nothing
What others should know:These are my GOTO pellets for my FX Maverick! The quality control and consistency of these pellets ensures untouched Accuracy! I use them for target shooting as well as hunting and have taken many nuisance foxes, raccoons, and groundhogs! They never knew what hit them!