I generally only carry a couple of handguns to the range along with a fun 22 rifle. I get to concentrate on the centerfire pistols and then finish my day at the range with the 22 shooting fun targets like chips of broken clay birds at various ranges.
I'm about to run into a transportation issue myself. So far the record has been 3 rifles and 2 handguns, but my range bag only has two handgun pockets. I have a pistol bag that I may utilize and just bought a field box. I have two rifles that need optics zeroed and two new handguns in addition to the two I usually bring. So, 6 guns on my next range trip assuming I can find some 9mm ammunition.
I am constantly working on improving handloads for my rifles. So, I only take one rifle at a time to the range so that I can concentrate on that one rifle and write notes on each load's performance in my reloading data notebook.
I still haven't learned... Last trip, two rifles and four hand guns. Going again sometime this weekend, and I will take ONE pistol (ok maybe two), wife will bring her brand new still unused revolver, and maybe the 10/22.
I'll be taking 4 rifles for load testing tomorrow. I get there when they open,and usually have the rifle range to myself for a couple hours.
It's usually around 2 or 3 pm before I get finished.If I'm paying for range shooting,I get my money's worth.