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Gamo Viper Express, Image 1

Gamo Viper Express Shotgun & Rifle, Nitro Piston

rating
4.517 reviews
6 answered questions

PY-1782-3637

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rating
4.517 reviews
6 answered questions

Description

Lots of knockdown power!

The special Gamo Viper Express shotshells are sized just for this .22-caliber bore. Because the loading port is sized for the shotshells, .22-caliber pellets will be loaded into a special chamber adapter you'll insert before loading. But you'll be able to quickly change back and forth between the shotshells and pellets by inserting or removing the pellet adapter.

The front sight is a bead. But we suggest that you mount a good-quality scope to extract max accuracy and help acquire further targets.

You should get 750 fps when shooting pellets and 725 fps with shotshells. You'll get 1/4" penetration into 200-lb. compressed paperboard.

The greatest benefit of this shotgun/rifle combo is the versatility that you can't find on other airguns. It's like getting two guns for the price one.
  • Gamo Viper Express air shotgun and rifle
  • Crosman Nitro Piston gas-piston powerplant conversion
  • Breakbarrel
  • Single-shot
  • Smoothbore
  • Bead front sight (no rear sight)
  • 2-stage adjustable Smooth Action Trigger (SAT)
  • All-weather synthetic stock
  • Ambidextrous Monte Carlo stock
  • Ventilated rubber buttpad
  • 11mm scope grooves
  • Shoots .22-caliber pellets or .22-caliber shotshells filled with No. 9 shot

Here are the benefits of getting a Gamo Viper Express with a Crosman Nitro Piston conversion:
  • Smoother cocking
  • Smoother shooting
  • Less recoil
  • No spring torque
  • No spring fatigue, even if you leave it cocked for hours
  • Functions perfectly in cold weather
  • Lasts longer than a metal spring
  • Installed by our expert gunsmiths!
  • NOTE: Gas-spring installation delays shipment by 24 hours (or one business day)
feature iconfeature iconfeature icon

Specifications

Brand
Gamo
Caliber
.22 (5.5mm)
Max Velocity
750 fps
Suggested for
Hunting
Powerplant
Gas-piston
Loudness
3-Medium
Weight
5.5 lbs
Function
Single-shot
Action
Break barrel
Scopeable
11mm dovetail
Front Sights
Bead
Rear Sights
none
Safety
Manual
Trigger
Two-stage adjustable
Barrel
Smooth bore
Barrel Length
17.63"
Overall Length
43.5"
Capacity
1 round(s)
Cocking Effort
30 lbs
Stock
Synthetic
Buttplate
Ventilated rubber
Grip
Ambi
Color
Black

Overall Rating

rating
4.517

Ratings

5 star
11
4 star
6
3 star
0
2 star
0
1 star
0

Review This Product

Tell us what you think

10 of 17 Gamo Viper Express Nitro Piston Reviews

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Most Recent
Overall rating
rating
4
Value for money
rating
5
Accuracy
rating
4

Light weight, quiet, sleek and easy to aim with the front bead. Haven’t played with pellets too much tho I’m looking forward to round ball. The ability to reload the shells with custom shot is a big selling point for me. I can use tungsten or lead or even copper bb’s and get a cone of destruction down range. Power isn’t jaw dropping but neither is a standard break barrel, it’s fine for small pests and a blast for plinking.

Seeing a second barrel or a larger power plant would have been ideal. Gamo has several multi-shot breakers and the ability to literally snap and shoot a handful of #7’s down range would take this from a Good gun to a Great one.

You can reload Shot shells but the seal is the hardest part to replicate. I’ve been using cleaning wads and packing foam, using the brass insert to cut the foam. You can shoot 4 .177 bb’s or rat/ bird shot,, etc. “buck and ball” is my favorite so far: 2 BB’s and 12 tungsten #7’s.

If you like to tinker and plink, this is great.

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Helpfull Review?
Overall rating
rating
5
Value for money
rating
5
Accuracy
rating
5

I like the nitro piston,the light weigh and shotshells. The gun is easy to carry. I work in an orchard and we have a starling woodpecker and sparrow problem this time of year. They birds don't stay still very long just a few seconds so a scooter riffle isn't ideal this little shotgun is very quick to aim and catch them for that second they stand still or as the try to dart away.

There isn't much I would change, maybe the color. All my guns are camo depending on where and what I hunt. Even birds are weary of a strange black object waving around. This one will most likely be painted a few shades of green and brown to blend better into the orchard. I think having fiber optic sights would be nice atleast the bead. I set all my shotguns up with fiber optic riffle sights. This having a vent rib makes it easy to install Hi-Viz turkey sights

This gun is a small shotgun 10-15 yard gun. Ideal between 5-10 yards. It's not a 12g so don't expect that. If you are like me and like to use 410 then you will like this one. I feel comfortable taking pigeon sized birds at 10yrds even rabbits or squirrel at that range. Wish I had bought this sooner. Would have made the iradication of pigeoo from the packing shed quicker as they moved to the rafters in the. building and to close for quick riffle acquisition in dark tight quarters

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Helpfull Review?(2)
Overall rating
rating
5
Value for money
rating
5
Accuracy
rating
5

I like the shotgun

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Helpfull Review?
Overall rating
rating
5
Value for money
rating
3
Accuracy
rating
4

That it can shoot shot shells & pellets.

At this point, I can't think of anything.

Shot shells for this gun are expensive.

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Helpfull Review?
Overall rating
rating
5
Value for money
rating
5
Accuracy
rating
5

Gamo Viper Shotgun with nitro Modification is assume so it can stay cocked longer. So far 50 rounds expelled Effective Range of use so far has been up to 15 yards. Gun does not have any real kick to it. over weight is perfect. Shoulders on the fall and the light weight flows shooting on the move.

Gun is loader than I wanted for my air gun. The shot shell could be a bit bigger or should I say more balls to shot shell, it would nice for different sizes based on your distance shooting or make the gun in a 25 caliber. I wish the stock was adjustable. I bought the gun for my son that's 12, shorter stock he could adjust as he grows would make this gun a must have.

Speed of shot is still slower then I thought, You will have to plenty of practice with moving target to figure your lead when shooting, ball spread is a foot trail at 15 yards. Shells are

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Helpfull Review?
Overall rating
rating
5
Value for money
rating
4
Accuracy
rating
4

This pellet gun hybrid shoots accurately for being a smooth bore at about 15 to 20 yards. The miniature shot shells disintegrate invasive insects!

I would make price lower for shells.

If using pellets REMEMBER to use brass adapter or you can ruin the air gun. shot shells should only be used on small critters at 10 yards maximum.

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Helpfull Review?
Overall rating
rating
4
Value for money
rating
3
Accuracy
rating
3

I was truly impressed by the power and the range of this rifle. It is a much smoother cocking effort than other rifles I have had. Even with just having shoulder surgery it was quite easy to cock and ready to fire. It had decent shot grouping at about 10-12 yards, enough to bag small game. The .22 pellet firing is a little more difficult without a rear sight but you may be able to get around that if you are a little more industrious.

I would definitely add a rear sight for use with pellets.

Although you can reload the shotshells as evidenced in some videos, it will definitely not give you the same power response as the store bought shot shells. In fact it makes it more dangerous because without the same power you run a greater chance of ricochet back at you. Stick with the store bought ones.

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Helpfull Review?
Overall rating
rating
5
Value for money
rating
5
Accuracy
rating
5

NICE LOOKING AIR GUN ... VERY WELL BUILT... QUIET SHOOTING

SHOT SHELLS ARE TIGHT AND SOMETIMES TUFF TO GET OUT

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Helpfull Review?
Overall rating
rating
4
Value for money
rating
4
Accuracy
rating
4

I waited until I could make an accurate report. I have had to reload the shells with 7 1/2 shot with 21 shots per shell to make the gun more accurate and lethal. The #9 is no good. I use foam hobby paper and a hole punch to make the air cup by sticking two together with nail polish (clear) . Then I put a little polish around the inside rim and then insert the foam pad into the base. For this I use a Bic pin empty ink straw the foam pad forms air tight seal for no loss of power and a single foam pad on the muzzle end of the shell to hold the pellets in. The range is lethal at 12 yrds. I have already harvested a cotton tail rabbit and ground squirrels. The adapter for the 22 cal pellet that comes with the gun works perfect. The gun has plenty of power and then some to punch a hole right through the bottom of a empty shaving can at twenty yards, which is pretty tough steel. I mounted a Beeman 3x9 scope on it and wow. With my reload I get ten to twelve shot in a four inch area

Have the shells come with 7/1/2 shot.

My scope railing came loose but I tightened one screw the last one at butt end and no problem.

Keith Jan 16, 2016

Randall to answer your question on the foam paper pads I glue them together for the base. No cup is formed they fit perfect flat and the nail polish (clear) spread around the inside the shell acts as glue for the pads to stay put. I only push these in as far as the cup would normally fit. I hope this helps.

Brian Jan 11, 2016

easy way to improve performance reloading. I take Beeman cleaning pellets and cut them in half (two reloads out of one cleaning pellet). I use lead free pellets plastic sabot, cut the bottoms off and use them. Take sabot and load into shot shell, load your shot and the pack cleaning pellet in top. They are twice as good as the factory shells. Have fun and good luck with your air shotguns!

Randall Dec 23, 2015

Keith you describe how you make the air cups, are the two foam pads both the same diameter? Double layer of foam glued? Then use nail polish to melt and form the cup? I tried it but it didn't work that well, the foam wasn't sticking to the nail polish that well but maybe that is what it is suppose to do, to form the air seal cup. I think coming in from the top is better for the reloads, but if you are forming a cup, then pushing it through the bottom of the shell, where the most narrow restriction is, may work but it didn't when I tried it. The Ray-Vin aluminum shells you can get are the same diameter inside from front to back, with a more narrow spot at the base to keep the wad in place. The original shells are a bit smaller at the base. So the performance would be different because the wads and the shot are just a bit smaller tube when it starts out.

Randall Dec 23, 2015

Best so far is base wad of spongy packing peanut piece, packed in with dowel, wad is 3/16 or a bit more thick. Then SAWDUST and whatever birdshot you want. Mix the shot and the sawdust together, pack with the dowel and cap with a bit of wax paper or whatever. I have experimented with chalk slurry from powdered sidewalk chalk mixed with birdshot and this also works but is dusty and looks like smoke . The key is to keep the projectile light and packed tight so it pops when it first starts out of the shell, and wad stays airtight. It may be good to put some sort of light adhesive cap on the top or base wad but definitely not loose and airy. Wish the base wads would be available, that rides down the barrel in an airtight and consistent manner, and gives power in the original shell. The original the shells are a bit smaller diameter in the base, and the top wad breaks apart which I believe helps to increase the power. All these shells need to fire to same aiming point to be good.

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Helpfull Review?
Overall rating
rating
4
Value for money
rating
5
Accuracy
rating
4

Very easy to aim and shoot. Good for rodent control. Good for pesty bird control. Alot Quieter than a 410 shotgun.

Put a laser type device on barrel for aiming purposes.

I think it is a very good effective air gun.

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Helpfull Review?
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