If the question is purely a factory ammo question the PRC and 30 Nosler are odd suggestions. I'm sure they are great bullets that pack a punch but not for someone that doesn't reload.
I've pulled a list of all the Rifle Ammunition available at Midway and the number of available different options. I filtered it down to just 30 caliber for this conversation and sorted by highest count. Midway may not carry every options but I'm sure they aren't lacking that many.
308 wins by a large margin followed by 30-06 then 300 WM, after that it falls off quickly. You can see 30 Nosler has 4 options and 300 PRC has 2. Not exactly a plethora to choose from if for some reason your gun doesn't love one of those.
I was in your position wanting a new .30 cal gun and went 300WM based on available factory ammo and don't regret my decision. I tried 6 different boxes of ammo and my gun liked 180gr Nosler Accubond and loved the Berger 215 factory ammo.
All Departments
Ammunition
Rifle Ammunition - Count
308 Winchester - 128
30-06 Springfield - 101
300 Winchester Magnum - 68
300 AAC Blackout - 38
300 Winchester Short Magnum - 35
30-30 Winchester - 28
300 Weatherby Magnum - 25
300 Remington Ultra Magnum - 21
30-378 Weatherby Magnum - 12
30 Carbine - 11
7.62x51mm NATO - 11
300 Remington Short Action Ultra Magnum - 10
300 H&H Magnum - 9
7.62x54mm Rimmed Russian - 7
300 Savage - 4
300 Norma Magnum - 4
30 Nosler - 4
300 Ruger Compact Magnum - 3
300 Whisper - 2
30-40 Krag - 2
300 PRC - 2
308 Norma Magnum - 2
308 Marlin Express - 1
30 TC - 1[/QUOTE