I've never seen a .30-30 bullet come apart, even when shot into logs or stumps, and I've never recovered one from a deer, so I can't see any advantage for using a premium bullet in a rifle of that class. I've often wondered why nosler even makes a 170 gr. partition.
In my 7x57, with lighter bullets and high velocities (2900fps), I do use partitions, because the range is sometimes short and I don't want the bullet to come apart. I had a core/jacket separation with a Hornady Interlock under those circumstances, and I don't want a repeat.
I think the Nosler is still the best of the premiums, with the soft front half and the solid shank, you get the best of both worlds. If your rifle shoots them well, there's no disadvantage to using them except for cost.
I'm not sure where I would draw the line for using conventional or premium bullets, probably around 2500-2600 fps. My .30-30 has never fired a premium bullet however, and probably never will.
