Re: which bullets
JT, If you are shooting 125 yards or less with the 300 PT GOLD, it will do the job for you, If you do your part with a good shot, That will put the deer down for the count. Barnes makes some 290 gr bullets that work really well also.
As for the weather, if you have a cross wind that you would be shooting into, the 300 would not be off target by that much to worry about.
Dave