38 Special +P has no difference from the standard 38 Special other than headstamp designation for load segregation. This is due to the fact that Starlines standard case design will handle +P pressures with no problems.
Starline is a family owned business and prides itself on producing the highest quality brass case available. With a production process focused on quality not quantity, Starline makes the finest brass and has for more than 40 years out of their state-of-the-art manufacturing facility in Sedalia, MO.