Just got the pettersons rifle shooter mag, Jon Sundra did a write up on the rem SAUM,(short action ultra mag). It has less powder capacity than the WSM, 7.5%. My WSM Browning uses around 10 grains less powder than a winny mag. to achive the same velocity. That is what I call efficiency! It is showing that it is also capable of fine accuracy. I'm convinced it will serve me well for it's intended purpose.
