mcb
Member
Short answer: no.
It does appear that SAAMI might have changed 38 Special +P just after the transducer data was released. In the first publication with Transducer pressures listed, 38 Special +P was listed at 18,500 psi and it was later updated to the current 20,000 PSI. The crusher/CUP measurement did not change and has always been 20,000 CUP. The story I was told from a SAAMI representative was it was simply a correction due to additional data being gathered. But this all happened in the 1970's.
1. There is no official SAAMI +P designation for .380ACP.
2. I would certainly be interested to see documentation demonstrating that SAAMI lowered .38Spl pressure limits in the early 1970s. I would think that kind of information would be available but I've never seen anyone provide any sort of evidence like that.Thanks for sharing that. Pretty much any time I've seen actual results comparing vintage ammo with the current stuff it checks out the same.
It does appear that SAAMI might have changed 38 Special +P just after the transducer data was released. In the first publication with Transducer pressures listed, 38 Special +P was listed at 18,500 psi and it was later updated to the current 20,000 PSI. The crusher/CUP measurement did not change and has always been 20,000 CUP. The story I was told from a SAAMI representative was it was simply a correction due to additional data being gathered. But this all happened in the 1970's.