Oryx chassis for Tikka t3x in 300wsm

A friend of mine is looking into getting an oryx chassis for his tikka t3x in 300 wsm. I am not very fimiliar with it and would like to know
1. Does it work with the original magazine
2.if not does it come with a magazine in that calibre or not
3. If not will it work with any aics pattern mag for 300wsm and can you recommend an online store that will ship it internationally

https://oryxchassis.com/us/oryx-bolt-action-rifle-chassis.html Looks like they offer them for Tikka, they don't come with magazines but they do sell them, and looks like they have distributors worldwide. I've been considering one for my Savage 10 as well, love the look and seems like a nice solid platform.