Be a man....shoot a 416 Rigby
Now, joking asside, I shoot a 7mm rem mag. Reason? I have an open window of shooting length. Out to 500 yds. Wont necessarily take that shot though. Most are in the 250-300 yd range or closer of course.
Id go 270 at least. That way if you ever decide to pursue elk or someting bigger, you have the gun for it.
Shotgun - mossberg 9200 is what i have. Its a semi-auto. Not made anymore, theres an upgraded version w/ a 3.5" chamber. Mines only 3"
As for brands, it doesnt matter. Sure there is quality difference, but theres also a price difference. Check your budget and go w/ that.