Add to that the catalog both for 2007 and 2008 catagorically state that +P is just fine for all Taurus firearms. They print that on page 2 or 3 usually.
The +P moniker is okay for recently manufactured Taurus handguns.
As was stated by Robby a steady diet is not recommended. This is because of the extreme pressures that cause accelerated wear and tear on the handgun.
+P is expensive ammo compared to most standard pressure practice or regular ammo. So it can be recommended that practice be done primarily with standard pressure cartridges and throw in a about 20-30 practice rounds of the +P persuasion to keep proficient. This doesn't have to be done if weekly or more often range trips are made. This is for those who visit less frequently.
The so called +Ps for the PT140 would be the light or middle weight bullets for the most part that are at or over 1100feet per second. These are loaded to much higher pressures than the 180gr. rounds or the 165gr. sedate loads that might still be floating around out there.
There is no regular +P designation for the .40 S&W , but there are very high pressure rounds. So those are the equivilant of athe +P in other calibers.The light bullet velocity high pressure rounds that are real screamers are usually in the 135 grain guise.
Next up are the 155gr.-165gr. high velocity high pressure rounds. The owners manual is right about one thing. Don't go over the published velocity figures for any of the particular calibers.
For example, the manual states for the 9x19 not to go over 1225 fps for 124 grain bullets. This makes some sense. In the smaller compact pistols going over that stated velocity,whether in 124 gr or 115gr. guise,would batter the gun severely and cause severe wear and tear on the pistol. Might even lead to parts failures. Even catastrophic ones. Happened to a few early model Beretta 92s.
So in the PT111 Mil/pro I use 115gr-124gr. rounds that are at that velocity or below it and still get a decent level of protection.
There are Black Hills +P 115gr. loads that have a velocity at or over 1300 feet per second. These exceed the published velocity in the manual. Will not use them in the Millennium Pro pistol,but will use them in the larger full frame guns. Sparingly at that.
Millennium Pro pistols are in the compact gun category. Why batter a gun to death in a early fashion with too high a pressure or too high a velocity,make things unsafe, and batter the tools that one uses to protect themselves with?
There's two pages of stuff to go through,but there are links in there that are of interest to those looking for PT140 and ammo data. Besides who can forget dbsoundguy's contributons to that particular thread?
High velocity reounds play a large part in the defense round arena. However speed is not always the best thing. Nor the most important of many factors that go into hitting the target properly.
High velocity rounds do have their place though. An important one.