Re: Definition of good bullet performance
My personal needs dictate that my definition of good bullet perfomance is #1 accuracy. All the weight retention or mushrooming or whatever does not do me any good if it wont hit my game. 2nd it must deliver enough velocity and energy to reliably expand at impact range. This means a high BC. Depending on the game I am hunting I like a rapidly expanding bullet for deer size critters and a controled expansion bullet for moose and big bears. I have found that I do not need complete pass throughs on big game. If the bullet does not pass through it generaly is due to the fact that 90% of the energy was transfered to the game itself. Trust me they still leave a heck of a blood trail.
In short, my definition of good performance is that the bullet is accurate, has good velocity retention, and expands reliably. On medium game it does not have to retain 100% of its weight. On BIG game it should retain at least 80%.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.