After reading every shred of info I could find about various ammo brands and types, including StoppingPower.net (Evan Marshall), International Wound Ballistics Association (I think that is what it is called), John Farnam's comments on testing he observed, and dozens of other bits and pieces I culled from the 'net, AND THEN sorting through all the name-calling that ammo discussions seem to wallow in, my personal list of desireable 9mm self-defense ammo is:
Corbon DPX (115 gr)
Corbon HP +P(115 gr)
Speer 124, either regular or +P
Winchester Ranger 127gr +P+
These seemed to show excellent penetration and expansion, and had lots of anecdotal "street results" to back up the testing (except for DPX, which is still new enough to not have been used in a lot of actual shoots, yet. However people I trust who test it and who hunt with DPX, praise it highly).
I really like the Corbon DPX, but it is flamin' expensive. I wanted to buy enough ammo to adequately test in my Hi Power, and still have enough left over to fight the next war -- figuratively speaking.
I ended up going with Winchester Ranger 127 gr +P+. I would not be at all unhappy to go with the Speer rounds if I couldn't find Winchester Ranger again, but I found a reasonably priced source for the Ranger stuff and bought a case.
The gentleman I bought it from is Jerry Kirkpatrick. I saw regular positive references to him on other forums, and I have bought from him a couple times with no problems whatsoever. If you are interested in contacting him, his email is
jwkpatrick@yahoo.com . Been awhile since I bought anything, but assume that is still valid.
I expect you can search on his name at AR15.com, 1911forum, and the like, and come up with some references if you are interested.
elb