I purchased mine exclusively for an out of state handgun only hunt. After talking quite a bit with the landowner, I made up my mind to go prepared for the biggest buck and longest possible shot.
This said I did a TON of research on bullets, powders, and loading techniques for this particular round since I had never loaded for one nor had to form cases the way I had to for this firearm. What I found was that after all the internet advice, the Nosler manual had about the best instructions for forming cases of any info I had gotten. If your forming them from 30-30 rounds this would be my best advice, to find their manual from about 10yrs back and read through this particular process. Summarized, you set a false shoulder on the case, moving it back a little at a time until you can just close the action with a tad of felt resistance. Load with a medium weight bullet to a mid range load with medium burn rate powder. This will allow the case to form with the first load, and not produce any extreme pressure, which can easily occur if the bullets are seated into the lands.
All that said, I tried close to a dozen different loads, but found that RL-15 was the overall best performer. I also went heavy on my bullet with the 139 and 140gr selections. As such I spoke with several manufacturers about what their bottom end velocities for at least double or so caliber expansion. This gave me an area to work with on my ballistics programs setting up loads based upon different velocities and different bullets to get within the end range I was looking for. Once I had this I had a somewhat muzzle velocity to work towards. Not knowing if I would even be able to get there I worked up slowly to my max load which was above this, then backed it down to just the bare minimum I could squeek by with. I then worked through the loads until I hit on my final load with the RL-15, in Win case, lit by Win-WLR primers, and using the 140gr Nosler BT. This load from the bench will easily shoot 1.5" or less at 200yds with a bit of practice.
I made my hunt and the one buck I could have shot walked up to within about 15' of me. While he was a grand buck I passed on him, and was glad I did as one of the other hunters in the drive who got him I found out later was in pretty bad health.
I have used it to take one of the largest hogs I have shot to date and also to take a whitetail doe at a lasered 283 yards. At the shot she leaped straight up and was a crumpled heap before she hit the ground. The 140gr BT entered about 3" back of her onside shoulder, and exited out the offside one. Internal damage was far and beyond what I expected, but the meat on the shoulder was hardly messed up at all other than a usual 1" or so exit hole.
Today there are a LOT of other bullets which may work out even better like the Accubond, the SST or the Interbond. The overall thing to remember is what your impact velocities will be rather than what you can get the muzzle velocity up to. Your only going to be able to safely hit the mid 2200fps range with loads using the heavier bullets, but they will carry further, and retain more energy when they get there. I am hesitant about sharing my load data as there are so many different variables, and these actions aren't the best when you exceed the limits. However from the info above it will be easy to find the load data in most books as it is in several. Then just a simple work up to your accuracy load.
Good luck and I hope yours shoots as well as mine does.