I am going to tell you that you will have to go to the range and figure out what your rifle does. My Marlin 336 was cut with a reamer that approximates the size of a Zeppelin.
This is how much the case moved forward after firing!.
If I had not greased up the cases and fired them lubricated, I probably would have had severe sidewall stretch and case head separations.
And, the bullet has to jump 0.20" before it engages the rifling in the throat! Marlin cut the throat so deep that I cannot seat the bullet out to touch the lands. Cartridge maximum length, based on the ejection port and the ejector location, is 2.550". I can't load a bullet to 2.7550 inches and still eject an unfired round! So my bullet have to jump two tenths of an inch before they touch the rifling. Your rifle could also be cut with a huge chamber. Marlin told me these were not target rifles and their customer were guys who shot maybe 70 yards. What was unsaid was that their customer base rarely shot their rifles, or cleaned them, so these huge chamber dimensions were for function reliability, not group size.
As such, all my loads are several grains above manual maximums, as I approach factory velocities of 2150 fps.
I do recommend IMR 4064 in the 30-30, it shot well in my Marlin
And if you laugh at two inch groups in a lever action, just consider the chambering job. I do believe that you will have to go out and develop your own loads in your 30-30 and use the manual values as a "guide".
Based on my research, a 150 grain bullet should go about 2250 fps in a standard lever action.