In 2024 the only real reason to pick a 30-06 over 308 is if you wanted to handload heavy bullets like 220gr.
I said this in 2024 on this thread and I still believe it is true. Especially with modern bullets. The 30-06 is still more in the 308 class than the 300 magnum class. When I think of hunting in BC, I can't think of a situation where I would say...Well, the 308 isn't enough, I'll take the 30-06 instead! More likely I would take a 300 magnum or the NEW KING 375 Ruger if I wanted more horsepower than a 308.
However I love the nostalgia of the 30-06. I've owed a few 30-06 rifles including a M1 Garand which was my favorite platform for the cartridge. These days the only 30-06 I own is my late fathers Remington 740 semi auto which he bought because he was a lefty and left handed bolt actions didn't exist in the 1950's.
My favorite story of this rifle is when he and his buddies decided to go north to a real backwoods area to hunt moose instead of the deer they hunted locally. The rented a cabin and the morning after they arrived there was a knock on the door.
"Hi there, I hear you are going moose hunting? Well I'm your moose guide and you will pay me $XYZ. They are like "we didn't hire a guide, we know how to hunt and can do it on our own" and the guy basically said "You guys are in the middle of nowhere, and the locals run this place, there are no RCMP for 100 miles...if you refuse to hire me you are going to have a very sad time up here, and you will be walking home because your car will be on fire"
Anyway, they hired him as he wasn't that expensive and my dad said he was a really good guide, got them onto a moose pretty soon.
My dads friends were carrying 30-30's so the guide turned to my dad with the 30-06 and said "YOU! You got the BIG gun! You shoot the moose so we don't have to chase it for hours" My dad complied and floored the moose with one shot. Then the guide broke out his flask of whiskey and they all had a good time cutting up the moose. These days it's kind of funny to think that the 30-06 was considered a BIG cartridge back then. The 300 H&H existed and I think the 300 WBY had also been introduced but no blue collar guy had ever seen either one.
I've still got a few boxes of Imperial 30-06 that my dad ran in that rifle.