Over the years, SAAMI specs have changed for some cartridges. Partly, because the method of measurement (crusher vs electronic) has changed, and partly because of actual reductions in some maximums.
Can someone give me a link to the CURRENT numbers? Googleing SAAMI Pressures gives me a paper from 1993, and I think that's out of date. Looking at other sources, many provide numbers but they often disagree and I don't know which ones are current.
I've seen .38 Spl as 17k, but +P as 18.5k and 20k.
+P+ was never an official spec, but I've seen 22k and 30k (wow!) listed as actual loadings.
.357 Mag as 35k and 45k.
Thanks!