You can't beef up the old 30-30 too much from the factory velositys but the thing you can do is find a load that is.......
Accurate "Dead on" with your reloads.

Thats what is so great about reloading................even if you have to be 150fps slower than factory...........and another vote for the 170gr JFP bullet for maximum penetration.

Hornady 100gr plinker for "Wabbit".