2506 said:You never mentioned what you are wanting to do with that heavy bullet and if it is a cast or jacketed bullet. If it is hunting you have in mind and you are going to use a jacketed bullet you will have little or no expansion. The jacket is too thick for the low velocity you are going to achieve with a 30-30. Those bullets are made for 30-06 class rifles. If it is punching paper then 1-12 twist should work with these bullets but they will be falling like a rock because they are so long they will take up lots of powder room in the case that is much needed to get velocity.