Where I hunt and around the people I hunt with it's mostly a 30-06 or 270 conversation. A "boomer" is someone with a 7mm, very few 300 WM and VERY few short mags.
That's about it - nothing much above 30-06 and nothing much below 270.
My uncle uses a 250 Sav and my son uses a 243 but that's about it.