Congrats on your son making a successful shot on a deer!
I haven't used these loads, but I have purchased them and have high expectations.
Underwood - 90 grain Accubond @ 3200 fps
https://www.underwoodammo.com/colle...grain-accubond-spitzer?variant=18785712275513
Norma - 100 grain Oryx @ 2990 fps
http://www.selwayarmory.com/norma-u...er-100-gr-oryx-protected-point-box-of-20.html
The Accubond has G1 BC = 0.376 and polymer pointed tip.
The Oryx has G1 BC = 0.261, semi-spitzer design with a more blunt tip.
Both are bonded bullets. Nosler says 60% - 70%:weight retention for the Accubond and 1800 fps minimum impact expansion velocity. Norma says 90%+ weight retention for the Oryx and 1500 fps minimum impact expansion velocity.
Best wishes going forward to y'all!