JSB KnockOut Slugs, Image 1
JSB KnockOut Slugs, Image 1
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JSB KnockOut Slugs .177 Cal, 10.03gr, Hollowpoint, 500ct

rating
4.57 reviews

$23.99

$0.048 / Rd

Model:MK I

MK I
MK III

Projectile Weight:10.03 grain

10.03 grain

Quantity:500 count

500 count

Quantity:

1
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Description

These new .177 KnockOut slugs feature a deep hollowpoint that offers excellent expansion, as well as a superior ballistic coefficient when compared to a standard pellet. Find out what you’ve been missing, and step into the ring with JSB KnockOut slugs!

JSB KnockOut Slugs .177 Cal, 10.03gr, Hollowpoint, 500ct

  • 10.03 grains
  • .177 caliber
  • 4.51 diameter
  • Hollowpoint
  • 500 count
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Specifications

Brand
JSB
Caliber
.177 (4.5mm)
Ammo Type
Slugs
Suggested for
Hunting
Projectile Weight
10.03gr
Ammo Shape
Ammo Diameter
.1776 (4.51mm)
Quantity
500
Price per Round
$0.048
Ballistic Coefficient
0.047

Overall Rating

rating
4.57

Ratings

5 star
3
4 star
3
3 star
1
2 star
0
1 star
0

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Tell us what you think

7 of 7 JSB KnockOut Slugs .177 Cal Reviews

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Most Recent
Overall rating
rating
5
Value for money
rating
5
Size/Shape Distribution
rating
5

Accuracy, downrange power, devastation on pest birds, ability to handle a breeze. What is not to like?

Nothing

I use these in a Kral Puncher Knight with the .177 barrel. I get 920 fps with these slugs on full power. They appear to be very accurate out to at least 50 yards and hit house sparrows so hard its like shooting them with .22 pellets at the same velocity. The Kral is a pretty decent PCP and is usually very accurate with almost any pellet. These slugs are no exception. I was hoping to get longer range and better downrange ballistics from these than pellets and It sure looks like they fit the bill.

Eric Jan 17, 2023

Want to update my review. I modded my Kral and got these going 1000 fps. Shot them into Clear Ballistics Gel at 12 yds. They penetrate 2" max and expand to .30"! At that velocity the damage to feathered targets is truly impressive, exceeding that of any .177 pellet I have used, including the Hades (which i also love). This is a fantastic projectile for pesting in my PCP.

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Helpfull Review?
Overall rating
rating
5
Value for money
rating
5
Size/Shape Distribution
rating
5

Shoots awesome out of my diana skyhawk my shooting 890 fps one shoot one kill

More in the tin and definitely sell them for less when you buy the best you get the best

Try them in your gun i wouldn't recommend them in a springer but for pcp gun are awesome

Philip Dec 09, 2022

Why not in a springer?

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Helpfull Review?
Overall rating
rating
5
Value for money
rating
5
Size/Shape Distribution
rating
5

Very consistent weight and diameter. Excellent performance at 100 yds in my HW100

Nothing

This was my first go around with slugs and definitely not disappointed!!

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Helpfull Review?
Overall rating
rating
3
Value for money
rating
3
Size/Shape Distribution
rating
4

Reviews that I looked at were all positive.

Did not shoot well out of my Gamo Big Cat 1300 fps. JSB 8.44 & 10.34 are right on.Slugs shot way right & did not group well.

Chris May 27, 2022

A spring gun is definitely not designed to be shooting slugs. Also.. your gun is not putting out enough power to push a 13 grain slug to the speeds it needs to stabilize. Thats why they did not show accurate groups for you

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Helpfull Review?
Overall rating
rating
4
Value for money
rating
4
Size/Shape Distribution
rating
4

Very uniform with no defects in my two tins. They shoot great out my stoeger. Bought the 10.3 gr to shoot out of my spring gun.

Nothing!

They was shooting at an average of 740 fps. I waxed my barrel and oil them. They shoot around 760 fps.

Brian Dec 28, 2022

Finally shot them past 20 yards. The groups start to open up a bit. Speeds a little slow out of my Springer for good accuracy past 20 yards.

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Helpfull Review?
Overall rating
rating
4
Value for money
rating
4
Size/Shape Distribution
rating
5

They are JSB's. All the good that comes from JSB's are included in these. See results thus far below.

Probably nothing. I would make them either a little lighter or a little heavier.

I've gone through about 150 of the new JSB 177cal 10grain slugs. Shooting from a Crosman Diamondback NP Elite BREAK BARREL that pushes about 20fpe with 10 grain pellets. I like to shoot longer distances. Results thus far: 50 yards = getting 1.5" groups. That is tied with the best groups I can get from the JSB Heavy 10.34's. 100 yards = getting 4-4.5" groups. This is tied with the best groups I can get from the JSB Heavy 10.34's. I'm very happy with these results, though they are no better than the traditional Heavy's. Also, the JSB Heavy's are more consistent at longer distances 100 yards and further. So far, I think I would stick with the Heavy's at least at these distances, At 25 yards I doubt I would get any better than the Heavy's either b/c results with those results are sub 1" grouping.

SETH Mar 25, 2022

After going through a full can, I am going to upgrade my rating to 5 out of 5. Amazing, especially at long distances for me!!

SETH Mar 04, 2022

Amazing results at 150 yards. 7" group. 35/40 shots hit my 15" target. Alot of pellet drop though at 18". So far, these look like a great choice for long distance shooting from a breakbarrel. Also, at 50 yards, they hit very hard, almost going through 1/4" particle board!

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Helpfull Review?
Overall rating
rating
4
Value for money
rating
4
Size/Shape Distribution
rating
4

These have a deep dish base . The center mass is is in the middle of the slug . Groups good in my 18 fpe Brocock at 890fps. Devistates birds and squirrels . Bucks wind good .

Screw top lid would be better .

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