140gr SST, just to add to the confusion.
The truth is, just about any decent bullet will work for whitetails at Creedmoor velocities. From the OP's question it's a safe bet that he hasn't shot a lot of deer. So maybe there are other questions he hasn't considered. Seems to me the biggest things to worry about with "up close in thick brush" are having a rifle that's handy and comes up quick, fits right, is not too long, and has sights that are quick on target. I could be wrong about the OP, maybe he's already considered all that and if so it's no big deal. But sometimes the best answer is to the question not asked.
You see it all the time with guys coming out west to hunt elk for the first time. Most guys spend a lot of time asking about which chambering is best but don't pay enough attention to things like comfortable boots and a comfortable pack.
No harm in letting them know that there are other things to consider. Self-appointed moderators notwithstanding
