Thanks for the replies. While I can and have reloaded for the max, the ammunition I was using was purchased from Reed's. Had good luck with some of their other loads in different calibers and thought I would try it.
I'll stick a bullet in an empty case, close the action and measure it. See if there's a difference in length. Or I'll try some 158 grain loads and see how they do.
My first .357 Max barrel was a 10" Bellm. Good shooter but could never get used to the blast in that barrel length. For me anyway.