Bullet weight is limited by how fast or slow your rifling twist rate is in your barrel...
If you have a 1:10 twist, you can shoot anything up to 230gr bullets. If you have a 1:11.25, then you can most likely shoot up to 210's with enough velocity. If you have a 1:12, a 185 will be about max.
Also your maximum effective yardage will also determine how heavy of a bullet you will need/want.
Lots of factors fall into play. So, tell us more about your rifle, and your maximum intended shot distance, and we can help get you in a weight range of bullets to start testing out loads for.