I'm wanting to load my super 14 30/30 with either 150 or 165 grn bullets. As a rule of thumb, what is the minimum velocity required to get good expansion, or how much retained energy do I need to keep? I'm wanting something to use as a starting point for determining my load and maximum range for the round, and I will do some testing when I have the load worked up. I guess I'm just trying to see how much range a 160 will cost over the 150 for deer sized game. I know that I can move down to a smaller bullet but I would rather stay with a heavier round if it will be adequate for 150 yards or more. If not, we'll go with the 130 grain bullets. Thanks for the info in advance.