p port. I agree w/the loads already listed. The 270 W is very easy to find accurate loads.
1 combo not mentioned yet, I believe was also JOCs.
For moderate recoil and blast use IMR 4064, 49grs., 130 bullet.
I've graphed that load years ago in several rifles and the velocity is @ 2900 fps. It helps novice shooters, YUTES, and ladies.
I killed several WT with that combo, so it is a proven performer IF the shooter performs also.