I have been loading the 110gr tsx in 270 win and 270 wsm with impressive results. Only two recovered out of a dozen or so deer and elk. Close range fontal shot on raghorn bull traveled 3/4 the length of the bull and recovered under skin just in front of the rear quarter. Didn't weigh it but...
I haven't hunted 39 or have any info on that. However if you've been getting the boys youth mentor points there is no reason you can't hunt imnaha branch bull at least 3 times before they grow up and move off to college etc. My party seems to draw the bull tag every 3-4 years on average.