RWS Hyper Velocity .177 Cal, 5.2 gr - 100 ct

Bought these last fall & noticed the majority of the plastic casings (sabot) were cracked randomly.
Returned to Umarex USA.
Replacements came 5 months later.
Not sure if they sent back the same package, because these were exactly the same, cracked.
Not sure how one could achieve any sort of consistent accuracy with some pretty big crack/splits on the sabot case.

Pros
Fast

Cons
more than 60% cracked

Using umarex fusion with these pellets. Astoundingly better than lead and still quiet as a whisper.

Pros
Easier to bolt in, but still small for big fingers. Deadly accurate with my CO2 based gun,

Cons
High priced

Make no mistake - these things have piercing power unlike any pellet I've ever tried. They can go right through or stick into materials that most pellets just bounce off of.

That is if they actually hit your target. These little pellets have hilariously bad accuracy. I tested them in several air rifles held in a vice and actually getting them to hit your target is a gamble. Even at a distance as short as 5 to 7 meters they are inaccurate enough to miss a tin-can lid sized object completely. The second accuracy problem is they don't often fly straight after leaving the barrel. I have a feeling the aerodynamics of these is very poor as they often tumble through the air after being fired. Imprints left in targets indicate they sometimes turn 90 degrees in flight and hit the target sideways.

Get these for plinking fun - not for anything you need reliability for.

Pros
Insane piercing damage. Lead free Good fit in barrel Very, very fast

Cons
Hilariously inaccurate Expensive

very accurate pellets but i tried hunting with them and the red part of the pellet just barely goes into an animals skin. but the metal part goes through and through. still killed the animal though. but still a very good pellet. also a little trick with these if you remove the steel tip and then are just left with the red part load the red part in your gun and fire it. sounds like a gun shot if done in a field or mountain area. (I'm not responsible for damage to any guns).

I saw these online and after reading all the reviews decided to order a bunch. I have a Ruger Air Magnum .177 and it is stated that these pellets will achieve the 1400 fps rated for the air magnum. I am completely convinced that the velocity was achieved, They sound like a .22 cal. rifle. However, I tried, with no success for an entire weekend to attain the .5" groups that I have grown accustomed to with the Gamo tomahawks. The best I could achieve was 1.75" and this grouping was the exception the the many 4.25" groups with many fliers out to 7" and almost every one of the 400 pellets that I loaded into the chamber seamed to be just slightly looser that the lead tomahawks. They look cool but my gun didn't like them.

Pros
Good Looking. Massive penetration!, Exceptionally fast, Sounds like a real rim-fire .22 cal.

Cons
Loose fitting in my chamber. Not very consistent accuracy, cost.

In a Gamo 1200 fps rifle @ 25 yds. these pellets achieved a 1625 fps muzzle velocity (26.2 % increase), 30.5 ft/lbs of energy with no noticeable change in accuracy
In a Crosman 445 fps 357 co2 pistol the RWS sabot achieved 593 fps muzzle velocity (7.6% increase), 4.07 ft/lbs of energy with a remarkable increase in accuracy.
The Crosman, 3 rounds in an 6" group @25 yards., achieved 3 rounds in a 2" group...These are fantastic pellets. The only warning is they will pass clean through small game which is unethical unless you make a head shot...

Pros
increased muzzle velocity and accuracy...Remarkable accuracy in a co2 handgun

Cons
Not intended for small game since pellet will pass through an animal causing little damage...

Don't like these at all for my rws 48. Some pellets just fall out of the breach. Accuracy is all over the place also. Maybe better suited for low velocity air rifles an pistols

Pros
None.

Cons
Inaccurate Sloppy fit that falls out of breach.

Fast, accurate, and looks cool. Did anyone notice the plastic build up on your barrel riffling? Its a real treat to get out.

Pros
Fast, deep penetration, and accurate.

Cons
Cleaning barrel after using these. I wouldn't recommend these on any expensive air riffle unless you want to replace your barrel.

Although they look fancy and pretty expensive, they aren't going to be the best buy for you. But it all depends on what you're looking for. This bullet leaves your barrel super fast that it breaks the speed of sound, but that doesn't mean greater impact. I shot a squirrel and it paused after being in a full sprint. It looked like it paralyzed it and then I finished it off with a crosman hollow point. Overall, I would say it's good for shooting small little birds. But for raccoons and
big pests of that size, it's a no go. Also does not fit in some pistol magazines.

Pros
Fast, nice design, and intimidating sound.

Cons
Loudness, durability, power, and cost.

These pellets are hard hitting and also very accurate in my Gamo Hornet.

Pros
Everthing