I would generally concur with stagpanther for almost every rifle.
But with the .30-30, most traditional bullets are soft nosed and vary considerably out of the same box, probably due to deformation of the soft tip.
The 160 FTX has a higher BC, and very little variation bullet to bullet box to box.
The 140 GTX, now the CX I think, also has low variation and might be another choice, but it is all copper. With my rifle, it shoots almost as well as the 160 FTX, both with LeveRevolution powder.
Your rifle my shoot the lighter bullets better than the FTX. Every barrel is different. It might even shoot even heavier bullets well.
All the soft nose bullets in my 30-30 shoot groups that are larger by 50%. They are pretty consistent in group size, but the groups are larger.