Bringing all your guns to the range is fun, but it is not practical if you want to train. There are exceptions the rule of course, for example, helping someone who may not understand anything about firearms become familiar. In doing so, you can help a person who knows nothing about firearms determine what firearm would best suit them from the shape, size, recoil, action, caliber, and general feel of the firearm.

Bringing all your guns to the range in my opinion is wasting, time, money, and effort that could be better spent training on a particular purpose like long-range marksmanship, self-defense tactics, and competition procedures. When all the guns are brought to the range, there is no real focus or purpose of the range trip.