Re: .30/30 and the 130 grain bullet!
I load the 30/30 for a singleshot Savage M-219 with bullets seated out well above the cannelure. Thus seated I have run the 130 Speer up to 38 grains RL-15 for 2539 fps from the 26" barrel and no signs of excessive pressure in-my-rifle! I have also loaded the same bullet to 2729 fps over 33 grains of RL-7, no problems, although another Savage with oversize firing pin hole showed cratered primers with 30 grains of RL-7 at 2548 fps. I've also gotten the 130 grain Hornady up to 2503 fps with 42 grains of H-414. Now bear in mind that all of those loads were with the bullet seated out quite long and I'm sure pressures would be much higher if the bullet were seated to crimp in the cannelure. Also consider that maximum loads vary quite a bit from one rifle to the next and that, for whatever reason, listed loading data from different sources for the 30/30 seems to vary more than for most other calibers. Certainly one should begin with listed starting loads and work upward cautiously but I think you'll find that the 130 grain can beat the 150 grain by at least 150 fps in your rifle. Whether or not that is enough reason to choose the 130 is up to you. Personally, I do like the 130 grain for deer but I'll admit than any advantage over the 150 grain is slim. I don't take running shots, don't take rear end shots and don't shoot at all unless I am sure I can put it in the kill zone. Thus used, the 130 Speer or Hornady bullets have done fine for me on several mule deer and on the two elk I have taken with it.
My main reason for prefering the 130 over the 150 is that 150 spire points can't be trusted to expand well at 30/30 speeds, whereas the Hornady 130 SSP is reliable at 30/30 velocities and shoots quite a bit flatter than a 150 roundnose. ;D
The story of David & Goliath only demonstrates the superiority of ballistic projectiles over hand weapons, poor old Goliath never had a chance.