FYI, .38 Special +P+ is to be used only in revolvers chambered for the .357 Magnum. Pressures are in the .357 range and it should not be used in standard .38 revolvers, even in medium and heavy frame guns, and certainly not in small frame guns. It is strictly a "political" load, which gives police armed with .357 revolvers magnum velocity and energy while the politicians can claim that the police use only .38 Special and not that "awful, overpowered" .357.
If you are planning to use it in a .38, best not to. If you are planning to use it in a .357, there are several .357 loads that are equivalent or better.
Jim