I have shot Winchester and Federal loads in my Marlin 30-30 over the last few years, and both are adequate loads According to many reports here and on other sites, CoreLoks are adequate as well, but since the question at hand is the "best", the Hornady LeverEvolutions are hands down the best in my (and many others) book. I have absolutely no interest in shooting 200 yards AT a deer with a 30-30. I killed 4 deer and 3 hogs with LeverEvs this season and won't go back to ANY other brand or bullet.