PAUL7,
The reason that people thought the .38 Special was a poor choice for law enforcement and self defense is because it was.
The original .38 Special 158 grain lead round nose got the nickname, "THE WIDOWMAKER" for reason. There were many documented failures to stop in police shootings. The round also had a history of overpenetration and exiting the target which just made things worse.
The .38 Special also had no good alternatives as the other police load, at the time, there was just as bad or worse, the 200 grain lead round nose. Things began to change when SUPERVEL introduced their fast, hollow point loads. Eventually, the major ammo makers followed and a number loads were developed of which the 158 grain hpswc and .38 Special 110 grain "TREASURY LOAD" which was also known as +P+. Both were hollow point loads which showed an immediate improvement when issued to street officers. Many departments resisted upgrading their ammo because of political concerns over the use of hollow point bullets which some in the media liked to call "DUM-DUMS", but police unions and many public failures of the lead round nose ammo forced them into it.
The 158 grain lead hollow point semi wadcutter design became so popular it picked up nicknames like the FBI load, the MIAMI-DADE load and so on. It worked much better and was chosen as a way to avoid going to a semi-auto or .357 magnum round.
As the ammo improved, the round became more relevant. I think the .38 Special FEDERAL HST 130 grain jhp is the best revolver defensive round in any caliber and load it in my .38 Specials and .357 magnum. Yes, I can always switch to a 110 or 125 grain .357 magnum load, but I will have to put up with more recoil, noise, muzzle blast and a brighter flash.
Jim