In my opinion Frizzler's comment just shows his lack of experience hunting with a 30-30. What is this 150 yard crap? The cartridge has more energy at 200 yards than the 44 mag has at the muzzle. Shoot as far as you can make good hits with the sighting equipment you have. As far as bullet weights go use what the rifle is already sighted in for. I can't say there is any difference in killing power between the two bullet weights. My 30-30 is sighted in for the 150 grain bullets, the Winchester PP to be exact. I have never recovered a bullet in a deer with this load and exit holes of 2 inches or better are common.