Congratulations on the doe. That is a great eating size deer. How big of a wound channel did that 240 grain XTP make? The reason I ask is my Staghorn likes that bullet also, but I always figured to shoot the 300 for the extra weight.
I know all about those anti hunter groups. I hunted an excellent farm that had one such group as a neighbor. And they patrolled their property just waiting for someone to violate their fence line. I had a nice nine point come out and stand at the fence line on my side. I kind of had the same thoughts as you I am sure, about taking the shot. He was over three hundred yards away but shooting my Ruger 7mm mag, that distance did not bother me. I dropped him two feet from the fence. And when the howling horde came rushing in... there was nothing they could do but tell me how terrible of a person I was for killing that buck.. from the other side of the fence of course.