Enjoy this journey. The more you prepare the better things will go. Consider the following.
Plan for Sun, Wind, Bugs, Snakes, Badgers, and no cell service.
Before you head out, shoot your guns and ammo at a known distance to develop accurate range data. D.O.P.E. tables really help. Once lesson I learned is limit the amount of variables to make your life easier. One year I took 223 Rem ammo in 40, 50, 53, and 60gr. The sooner you pick one load, your life is easier.
Where possible shoot suppressed from a stable position with some range finding information.
@Rick in Oregon designed the best table in my opinion.
Caldwell offers a cheaper alternative loosely based on his design.
Suppressed shots don't scatter the pups as much. The slight downside is you will have more shots to make and heat up your gun and suppressor faster. Good problem to have though.
I would love to setup and spend a day but doesn't always work out that way.
More like shoot a lot, displace, shoot more. Since dogs go down then come back up, you can clear an area only to have it hopping again a little while later. On a multi-day shoot, we have driven through an area shooting as we go, turned around and shot the other side. Shooting trailers seem like a great solution.
As for taking fewer guns, bring at least a couple. For one thing gun barrels heat up.
Barrel damage accelerates with heat. Having a couple of rifles let you keep shooting while hot barrels are cooling. Smaller calibers have an advantage here to a point.
You can overlap the range of your rifles and work farther out with the hotter cartridges.
Like
@Rick in Oregon says, bring an accurate pistol. It happens all the time. You get set up and out of nowhere, a sassy dog chirps at you from a few feet away begging to be dispatched. Colt just announced a new 10 rnd 22lr revolver if you have a unlimited budget for new toys.
17HMR can be zeroed for most shots out to 150. Some would say out to 200.
Once zeroed, check your over/under at other ranges if possible. This will be your work horse rifle.
Accuracy matters here. A good bolt gun in 17HMR usually outshoots a milspec 17HMR AR upper.
Spending time getting zeroed when the dogs are out can be frustrating.
20 VarTarg/223 Rem or "insert favorite varmint round here " work well to 300.
Sure they can shoot farther but remember the wind. Afternoon gusts really pick up.
This will be your "did you see that dog blow up" gun. Fast 53grain Vmaxs are explosive.
Heavy bullets give you more range and less deflection but heat up fast.
Range finding helps cut down the sighters from "walking it in" shots. I like 6mm for 300+ yard shots.
Ok remember when you went to the range and zeroed your rifles? What was the temperature that day?
Hotter temps affect zeroes and accuracy nodes. I had an accurate W748 load push wide on a hot day where the similar load with Benchmark stayed accurate. Temp stable powder is your friend....