Another good one to try is Winchester Silvertip 170 grain. I use them along with Remington Core Lokt's. A great place to check out ammo and reviews is at midwayusa.
http://www.midwayusa.com
Click on ammo, then find rifle ammo, 30-30, etc...etc... and check out all the makes and reviews.
Enjoy the 30-30! I love mine and won't part with it. It is equally at home in the deer camp with the other guys and their ultra-magnum-thunder-boomers.
They all are on the ridges and could have 200 yard shots. Meanwhile, I'm in the heavy woods and thickets, where I'm going to have probably a 50 yard shot. If they jump one and he heads to the thickets, I got him. Just as if I jump one and he heads out of the thickets to the ridge tops, they got him. We all work it out that way...