My son is taking over my 308, a semi custom 308, 20" barrel. I've loaded target rounds for years, shoots 168 BTHP points great. Also, he has used Winchester factory 155 Power Points that have done ok to date, definitely hammer the deer but rarely get a pass through. I'm wanting to load up a round for him that will be predominantly for whitetail in the Southeast. Want to knock them down but also prefer pass through for blood as tracking in heavy brush is common. Most common shots are 100-300 yards where we hunt. Appreciate any suggestions!