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Gamo Roundball .22 Cal, 15.43 gr - 250 ct

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  • Code: 632032554 · $7.49 · .22 · 15.43 grains · 250 ct
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Perfectly formed round balls of pure lead are heavier than pellets and are ideal for situations requiring lower velocity but high terminal velocity, especially when shooting at metallic targets.

Note: Round ball ammo should only be used in PELLET rifles & pistols, significant damage may result if used as an alternative for BB's
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Specs
  • ManufacturerGamo
  • Caliber.22
  • Ammo TypeRound Balls
  • Ammo Weight15.43 grains
  • Pellet ShapeWadcutter
  • Pellet Quantity250 ct
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Reviews
Average Customer Review
3.5
3.511 Reviews
5
45% (5)
4
9% (1)
3
18% (2)
2
9% (1)
1
18% (2)
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3.0
By BrianUSASeptember 19, 2021 Verified Purchase

Everybody should know how much power their air rifle has. A chronograph is an essential tool for serious knowledge that will help you find the right weight so you are keeping pellets moving between 800 and 950 ft per second. I can shoot anything less than 17.5 grain at over 1,100 ft per second which breaks the sound barrier and is very loud but accuracy suffers. For that level of power you need a 21 grain or heavier to take advantage of the power and retain accuracy. Cleaning your barrel also will help smooth flight down the barrel. After a thorough cleaning a round ball or two will help "season" the barrel. I shoot them into a bucket of wet rags and water. Then you have something to look at and see if they look uniform. I had a gun that was malformed and only had marks on 2/3 of the projectile! I returned that for an exchange.

Pros
I'm happy these are made out of lead not some alloy with tin. As another reviewer stated these are not going to be very accurate because they're not designed for the twist rate of the barrel of most pellet guns. I use these by pushing them through the barrel with a round dowel (round chopsticks) to examine the lands of the barrel. This allows me to see how much force I use as I push it down the barrel. Most air rifles have a tight spot known as a choked barrel. In that case I do feel where I have to push harder to get past that spot and then they start to go easy. I also noticed that in an unchoked barrel such as a Korean Air gun that they slide uniformly the entire length of the barrel. When they come out I'm able to examine the way the lands cut into the lead. If you try to do this experiment with a regular pellet you're deforming the skirt and scrunching the pellet because it's hollow and it's harder to determine how the barrel feels.

Cons
For what they are a little pricey. For my purposes it's okay because I don't try to shoot groups with them.

1.0
By JohnUSANovember 9, 2020

Round ball in a airgun are going to be very hit and miss. The rifling twist rate in air guns are way to fast for round balls. Rifling twist rate for rifled muskets was 1 turn in 66 inches if I remember right. This was considered to be optimum twist rate for round balls at that time. The pellet rifles have a rifle twist rate around 1 in 16 or there about? Much to fast for round balls. Maybe if you had a variable pressure system on your pellet gun to play around with and try different speeds you might find a semi sweet spot for the round balls in the rifling twist rates for modern projectiles. Just my 2 cents worth on the round balls. I reload for powder cartridges and know a little about bullet weights and speed. Longer bullets prefer a faster twist rate than a shorter bullet. Then you have to find the speed at which that bullet prefers to fly in consideration with your gun. That's why you try many different pellet weights and such, to find out which your gun shoots the best.

Pros
None

Cons
None

1.0
By BrianUSASeptember 20, 2018

Out of a 10 shot group I had a spread of 190+ fps. Group was 4"+ at 30 yards. I would never hunt with this ammo...

Pros
none

Cons
everything

2.0
By KennethUSAFebruary 27, 2017

My experience with these round balls was poor. I had high hopes for these but had difficulty putting them into the breech of my old RWS 52 side lever spring gun. They were too large to fit into it. Maybe being round balls, they were supposed to be tighter fitting. I was not comfortable cramming these in the breech. I ended up discarding them.

Pros
Reasonably priced to try in your gun. I would have given them to a friend if I had one who shot a pellet gun.

Cons
Found sizing to be in the upper limits of .22 caliber.

4.0
By DominickUSAMay 29, 2016

Least accurate I used out of a umarex octane , but honestly one of the most fun. This is the pellet you will use while messing around with your friends from the massive thump and power behind it.

Pros
Great for playing around

Cons
Not accurate for hunting past 20 yards

5.0
By Brian USAMay 28, 2015

have serious knockdown for quick dispatch

Pros
hit super hard

Cons
pattern widens a bit

5.0
By EricUSAJanuary 14, 2015

I* got these more for nostalga - used to use .22 roundballs in a Benjamin Pump when I was a kid. They work well in my Titan Nitro.

Pros
Accurate - tight groups on paper

Cons
but hits 3" right and about 1" high from zero using Crosman Premiers. Need to resight for any serious use.

5.0
By TomApril 20, 2014

The round balls have less deflection from wind .They still are heavy enough to be effective hunting ammo.

5.0
By HugoFebruary 28, 2014

But at close range I can pop 3 balls in the barrel and shotgun a bird to bits

Pros
SHOTGUN

Cons
None at this moment

3.0
By collectorMarch 31, 2013

I was given a Benjamin air rifle that used the Roundball and spent months trying to find some to try it out. Works well in the gun but very expensive for both the quantity and shipping.

Pros
If this is what you need it works ok.

Cons
It is expensive

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Q&A

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Can these be used on a Gamo Maxxim G2? It seems like I’ve read somewhere that it’d be a bad idea, but I’m curious. Thanks.

asked Reagan from USA

Can be fired on a .22 break barrel rifle?

asked marcos from Panama

Can these be shot out of an Airforce condor safely without ruining barrel.

asked Alton from USA

Yes they are lead, just like pellets, they will not harm the rifling.

Daniel from USA
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