My point is that what's marginal is very debatable, and it very often gets vigorously debated around here. The problem lies in that fact that people take it personally and it gets nasty. I don't agree with you that the 243 is marginal for deer at 300 yards, but by 400 it's getting pretty tired. You're entitled to your opinion, but the truth is that the deer will die just fine at 300 IF the OP can hit it right. Colorado Luckydog also pointed out that it's not really helpful to suggest to the OP that he use a .270 when he only has, and asked specifically about, the .243 Win and 300 WSM. Why would he go buy a 270 if the 243 is inadequate when he has a 300 WSM? Doesn't make much sense. Do you see where I'm going with this. I'm not trying to start the fight. I'm simply pointing out that I've been here long enough to know that this is how they start.

Mike