RE: Caliber and bullet choice for Deer. Why so heavy?
Lighter Ballistic tip type bullets when shot properly into the vitals kill dramatically compared to a more controlled expansion bullet, in theory. I tend to lean completely the other way myself. I shot my buck this fall ( 225lb ) with a 225 Partition out of a .350 rem mag and with one shot behind the shoulder he collapsed in his tracks stone dead. The other bonus was that with the bullet being so large and solidly constructed you could almost eat to the hole as they say. Meat loss was the least I have seen in a long time. So the point is that there are no rules that can't be broken. I have also taken game with B tips with good results and many hunt elk also with them. Shoot em where you're supposed to and most bullet/caliber combos do the job.