Re: 7WSM and 162 A-max
I think most are using H4831SC. I was using 64.8gr and getting 2960 out of a 26" barrel.
You can also try H1000 but I'm not sure you'll get the speed out of it like the 4831 but it is something to consider or try.
There should be a thread here that has a lot of 7 data that would be worth searching.