Do any of you guys know of a rifle made in this caliber?

Well, there is the FN PS90 which is the civillian version of the submachinegun that the round is used in. I am not aware of a bolt action or other action type if that is what you are looking for.

Can you post a picture of the cartridge?

For those of you whom don't know the history of this cartridge here's a little info.

The 5.7x28 mm cartridge (http://en.wikipedia.org/wiki/Cartridge_%28weaponry%29) is a small caliber cartridge for pistols (http://en.wikipedia.org/wiki/Pistol), submachine guns (http://en.wikipedia.org/wiki/Submachine_gun)/personal defense weapons (http://en.wikipedia.org/wiki/Personal_defense_weapon) and carbines (http://en.wikipedia.org/wiki/Carbine) developed by Fabrique Nationale de Herstal (http://en.wikipedia.org/wiki/Fabrique_Nationale_de_Herstal) (FN Herstal).


The 5.7x28 mm rounds are bottlenecked cartridges with 5.7 mm (.224 inch) bullets and come in several versions. The 5.7x28 mm cartridges have high muzzle velocity and low recoil, and were designed to be more effective against modern body armor (http://en.wikipedia.org/wiki/Body_armor) when used in pistols, submachine guns, or carbines.

The SS190, the de facto 5.7x28 mm standard cartridge for military and law enforcement, was originally designed for the modern battlefield where troops may be wearing body armor (http://en.wikipedia.org/wiki/Body_armor) and conventional pistol or submachine gun (http://en.wikipedia.org/wiki/Submachine_gun) rounds may be ineffective. Currently the only firearms (http://en.wikipedia.org/wiki/Firearms) chambered for this cartridge are the Five-seveN (http://en.wikipedia.org/wiki/Five-seveN) pistol (http://en.wikipedia.org/wiki/Pistol), the FN P90 (http://en.wikipedia.org/wiki/FN_P90) personal defense weapon (http://en.wikipedia.org/wiki/Personal_defense_weapon) and the FN PS90 (http://en.wikipedia.org/wiki/FN_PS90) carbine. Singapore Technologies Kinetics[1] (http://www.stengg.com/aboutus/company_detail.aspx?cylid=0&cyid=5), using the cartridge in the kinetic component of their Squad Support Weapon (http://en.wikipedia.org/w/index.php?title=Squad_Support_Weapon&action=edit&redlink=1), is developing a third-party weapon system.[2] (http://www.stengg.com/CoyCapPro/detail.aspx?pdid=218)
Some military and police personnel view the 5.7x28 mm SS190 skeptically, although it is touted as a solution to defeating modern body armor. Many regard the SS190 as having insufficient "stopping power" for law enforcement use and this topic has seen much debate. A brief controversy ensued in the United States (http://en.wikipedia.org/wiki/United_States) in 2004 when it was claimed by the Brady Campaign (http://en.wikipedia.org/wiki/Brady_Campaign) that the civilian-legal SS192 cartridges are able to pierce Level IIA body armor when fired from the Five-seveN (http://en.wikipedia.org/wiki/Five-seveN) pistol (http://en.wikipedia.org/wiki/Pistol). All civilian-legal game hunting cartridges, and even several pistol cartridges, are capable of such penetration. The ability of SS192 to pierce body armor as claimed by the Brady Campaign was not confirmed with facts or data by any authoritative agencies or sources. The ammunition was not restricted for civilian sales, since it is not legally recognized as armor piercing by the BATFE (http://en.wikipedia.org/wiki/Bureau_of_Alcohol%2C_Tobacco%2C_Firearms%2C_and_Ex plosives). Nonetheless, FN chose to withdraw the SS192 from the market and replace it with the SS196SR. The SS196SR's performance against armor is diminished due to a heavier varmint bullet (leading to lower muzzle velocity) and a polycarbonate (http://en.wikipedia.org/wiki/Polycarbonate) tip that promotes expansion and fragmentation upon impact.


FN's 5.7x28 mm brass cases are covered with a special polymer coating for easier extraction on the Five-seveN (http://en.wikipedia.org/wiki/Five-seveN) pistol and PS90 (http://en.wikipedia.org/wiki/PS90) carbine due to the high chamber pressures and lack of case tapering. In addition, the coating insures proper feeding and function in the P90 (http://en.wikipedia.org/wiki/P90) magazines.


Cartridge dimensions

The 5.7x28mm has 0.90 ml (http://en.wikipedia.org/wiki/Litre) (13.85 grains (http://en.wikipedia.org/wiki/Grain_%28measure%29)) H₂O cartridge case capacity.
http://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/5.7_x_28.jpg/400px-5.7_x_28.jpg (http://en.wikipedia.org/wiki/Image:5.7_x_28.jpg)
5.7x28mm maximum C.I.P. cartridge dimensions. All sizes in millimeters (mm).
Americans would define the shoulder angle at alpha/2 ≈ 35 degrees. The common rifling (http://en.wikipedia.org/wiki/Rifling) twist rate (http://en.wikipedia.org/wiki/Twist_rate) for this cartridge is 228.6 mm (1 in 9 in), 8 grooves, Ø lands = 5.53 mm, Ø grooves = 5.62 mm, land width = 1.63 mm and the primer type (http://en.wikipedia.org/wiki/Percussion_cap) is small pistol.
According to the official C.I.P. (http://en.wikipedia.org/wiki/C.I.P.) (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives (http://en.wikipedia.org/wiki/Commission_Internationale_Permanente_pour_l%27Epre uve_des_Armes_%C3%A0_Feu_Portatives)) guidelines the 5.7x28mm case can handle up to 345 MPa (50,037 psi) piezo pressure. In C.I.P. regulated countries every rifle cartridge combo has to be proofed (http://en.wikipedia.org/wiki/Proof_%28firearms%29) at 125% of this maximum C.I.P. pressure to certify for sale to consumers.

There is at least one company doing an AR upper in 5.7 x 28. A search on AR15.com will turn it up. Why I don't know since it is considerably less powerful than the 5.56 and since it must be in the AR platform, why go with a less powerful, more expensive cartridge? And if one wants their pistol and carbine to be the same caliber just go with the P90 or PS90.
I've heard of somebody doing Contender and Encore barrels in it also but do not recall who. Fox Ridge? SSK? Bullberry?

Funny that this post should come up now....the other day at the range I picked up two cases....I'd never seen it before but it is a 5.7x28.

Here it is next to a 223 Remington. I stuck a bullet in it.

http://img.photobucket.com/albums/v69/GuideGun/57x28223.jpg

Did some checking, if it was a little shorter, it might have a chance of fitting into a .22mag length bolt gun... oh well. I believe that it behaves well in the p90.

thanks guys..I too picked up some brass at the local range...thought it might make a real nice 200 yard small varmint gun...Encore maybe..

I would imagine that you could find someone to do a custom chamber for you if you wanted an Encore or a small bolt action. You'd just have to compare the price of ammo to see if it is worth using over the 223.

Thanks...I guess I have enough .223 to start a small war.....and I do love the various forms of it..to include Ackley Improved....but the little round just got my attention....these days it is getting harder and harder to find places to shoot..and small has become interesting to me again....I may just go with .221 Fireball...instead

The Fireball is an excellent choice.....lots of good powders but you will be limited to 55 grain and lighter bullets. Guns with 1:12, 1:14 twists are the most common.

I just ordered a 300 Fireball, same case necked up to accept 308 bullets. It will be my first foray into wildcatting, but I ordered an AR upper and it uses the same magazines as a regular 223

Performance-wise, it seems to fit right between the Hornet and the Fireball - an exceedingly narrow space to wedge into, if you ask me. Except as a novelty, it would seem to have little or no utility not already possessed by those other much better established rounds.

Funny, somebody mentioned a .22 mag bolt gun...the ballistics are real close to being the same...LOOK IT UP

I assume you mean the 22 mag is the same as the 5.7x28.

Yep, the same as in, a 40 grain prjectile at, if my memory is correct, 2200 fps (which is why I said look it up), when propeled from either cartridge.

I think you are on the money Rocky....the .221 Fireball might be a better choice and it is commercially available....thanks