With a 9-twist, you're looking at 70-75gr max weight, or perhaps 77gr, since you'll have longer than a carbine barrel on your bolt gun. Extra barrel length means extra velocity, which means higher rpms which is more stable. Depending on how fast your barrel is, you might get away with some 80gr stuff, but those may keyhole on you.
Take a look at Nosler's data, along with the online Hodgdon data. Hornady and Speer may also have some good options for you. Be wary of any online data from just random folks. Until you get a handle on handloading and some experience with the process, I'd stick to tested data from manufacturers and you should be fine.