New Talons are easily available
In its heyday a dozen years ago, the Black Talon was arguably the best commercial load available. A lot of hype and mystique has cropped up around the Talon; just a few weeks ago I was channel-surfing and caught a program on the Discovery Military Channel titled, I believe, "The Ultimate Bullet." It was a ridiculously poorly-researched program, I counted something like 30 factual errors in the 25-minute show. It stated that "The Ranger Talon is today's ultimate bullet, bar none." That's extreme B.S.
The new Ranger Talon law enforcement/military cartridges are substantially-improved versions of the old Black Talon. Winchester also has a civilian version of the Ranger Talon they call the Supreme SXT, sold in 20-round boxes at a pretty price. The LE-only versions are a bit ballistically superior to the civvie SXT.
Although Winchester limits their sales to Law Enforcement agencies and suppliers only, that's just a company policy and it's not illegal to buy or sell them as civilians. Law Enforcement Ranger Talons in 50-round boxes are available at very reasonable prices from several sources--Ammunition To Go has many selections of the Ranger Talon in 9mm and 45 ACP, and so I believe does Streichers. Other LE-only ammo such as the Federal Tactical series is also available through these on-line stores.
My own 9mm carry ammo is the Talon 127gr +P+--it's quite accurate, penetrates deeply, expands dramatically and produces a Magnum-level blast for deterrent effect...however, the recoil is suprisingly light, recovery time is quick and rapid follow-up shots are no problem with my Sig P226. Because of its high pressure load, Winchester published data that it should only be used in a few specific pistols--I believe they specified full-size Sig Sauer, Glock and Beretta 9mm's, and no others. These weapons are the makes most frequently used by various special military units and police SWAT teams, and perhaps Winchester simply didn't bother to test the +P+ round with other weapons. Springfield, Colt and others produce all-metal 9mm pistols with strong actions and I don't doubt that the hot load is perfectly safe in them...however, I would not fire it in a compact or polymer-frame 9mm, just to be on the safe side.
While the new-generation Ranger Talon is an excellent cartridge, many cartridges on today's market equal or surpass it in some regards. The LE-only Federal Tactical HST is another outstanding defensive round. Federal has posted several ballistics reports on their LE website directly comparing the Tactical HST to the Ranger Talon, and in terms of overall consistency the HST might be superior--it has superior bonding and in various tests the Talons suffered from core/jacket separations more often than the HST's.
Other outstanding cartridges are the Gold Dot Hollow Point loads from Double Tap (these are much hotter than the Speer factory Gold Dots). I've tried half a dozen types and calibers of Double Tap ammo, and it's all very high quality stuff with serious poop.
A number of cartridges on the market employ the excellent Hornady XTP bullet--while Hornady's own factory loads are okay, I greatly prefer the hotter Black Hills XTP ammo (Black Hills doesn't mention in their ads that they use Hornady XTP bullets, I assume for legal reasons, but most of their JHP's are in fact Hornady-manufactured XTP projectiles).
The latest ammo buzz is the recently-introduced Corbon DPX series, which propels a light Barnes X solid copper HP at high speed and produces excellent bullet energy, deep penetration and dramatic expansion. These may turn out to be the best choice available, especially for compact weapons.
Both the Gold Dot and the XTP have bonded construction eliminating core/jacket separation (the primary cause of bullet failure). The Corbon Barnes X is solid copper and needs no bonding. Although the folks at Federal/Speer have devoted a lot of time to dissing their only competition for law enforcement ammo (Winchester's Ranger Talons), I haven't found much supporting data for their field testing information claiming numerous coore/jacket separations with the Talon. All of the problems Federal found with the Talon occurred in barrier penetration testing such as auto glass, wallboard and steel, though police forces and private citizens who've used Talons for years mention no comparable problems. Still, the tests were conducted in controlled studies with police departments in Portland, Tacoma and San Diego and can't be entirely discounted.
Another cartridge that belongs in this list is the Remington Golden Saber.
All of the rounds I've mentioned have outstanding terminal performance and serve well for personal defense. Picking between them is mostly a matter of personal preference and which ammo diet your weapon prefers. To buy the good stuff you needn't go further than AmmoToGo
http://ammunitiontogo.com Double Tap
http://www.doubletapammo.com Streichers
http://www.streichers.com or Midway for Black Hills XTP, Golden Saber and DPX
http://www.midwayusa.com. Corbon ammo is also available direct from the company
http://www.dakotaammo.net
Check out the law enforcement websites for Federal/Speer, Winchester and Corbon, they'll tell you much more:
http://www.le.atk.com
http://www.winchester.com/lawenforcement/catalog
http://www.dakotaammo.net