What's he shooting that he can launch those 110's at 3370fps because that's cooking.
Seems that 110gr A-Tip performed well on your sons deer. Hornady did an outstanding job, with regard to bullet to bullet consistency, with these new A-Tip's. I've measured quite a few of them and it's amazing how damn near exact they are from bullet to bullet. I've heard/read all kinds of different stories as to their performance on game though. For some folks they perform great while others said they blew up and had crazy rapid expansion and others said they had nearly no expansion and penciled straight through. The one consistent comment you hear though is that they pretty much always shoot small groups.
Unfortunately terminal bullet results that you can't be there to verify all the details are next to worthless.
I've used the Hornady Interlock and Nosler Partition for years on deer and elk, Hornady VMAX for Varmints. I've used Hornady FMJ and Match for target practice. I did my job so did the bulletts.
I've heard shooters quote their velocities from a book, not from chronagraphing the final load.
What I've found for 6.5MM Swede 140 Hornady chronagraphed 2925 FPS, in close 100 yards NO BONE HIT expansion was good, pinky sized hole but judged only from the exit hole, no bullet recovery. As distance increased to 300 yards my buddy with a 260 Remington 140 grain at 2750 reduced expansion, less than a pinky finger, judged by exit hole NO BONE HIT.
My Swede at 330 yards on a white tail, hit a rib on the near left side, broke the far right shoulder exiting. An exit hole about the size of my thumb, no recovery of the bullet. The same buddy had a similar shot at 100 yards with his 260 and his bullet was found on the inside of the hide on the far side with massive expansion with some core separation. Obviously the argument being was it the shorter distance hitting bone that destroyed the bullet or inconsistencies in manufacturing.
The loads, distances and results were reasonably reported, to me it's moot, 4 shots, 4 dead animals, 1 recovered slug with older style projectiles.