I run lyman aperture sights on my model 70s. Don’t like scopes unless they are mounted forward of the receiver.
I would hunt your 270 over the 300 because it’s handier.
I got to shoot a friends 300 super grade a while ago. Very nice rifle, accurate with just the barrel sights. He sold it at the Winchester show. He has another 300. Pre war, reblued but not padded. I will hunt with it and maybe buy it. It won’t replace my featherweights though.