Seems just about everyones deffinition for "trail gun" is just more like "Defensive carry guns while on the trail" This is not the real definition of a trail/woods gun.
For me a trail/woods gun is one that I carry when I go out on the trail and shoot.... A day spent with the trail gun is a "RangeDay" with excercise and real world practice and settings. (and a chance to shoot some small critters/predators) And maybe get something tasty for my dinner.
For me I carry a gun as a trail/woods gun and I SHOOOT! I always carry 50 rounds minuum and always wish that I had brought more. I walk as far as I feel like and shoot at everything that catches my attention. Lots of tree knots, every piece of litter, every bone, and I try to mix in some long range shooting accross canyons at rocks or other items that "stand-out".
This means the pistol needs to be small(er) The 500 and 475 are too much and will shoot through most trees, are expensive and the shells weigh a ton
And the worst part is the noise and concusion that these big guns produce, I tire of shooting these before I tire of walkiing. (and they probly scare others in the area)
This is all done safely and I usually try to strike out in my own direction so as not to go blazing down the main hiking trail where all the tourist walk.
The 45 colt and 44mag is about right when loaded with trail ammo, Cap and ball revolvers are fun, a 22 can be fun, but it is a little too weak for real world practice.
Noise carries very little when small(er) loads are used...I shoot my 1858 Remington with a 45colt conversion a lot!! around 900fps with a 230gr and when the box of 50 runs out I still have two extra cap&ball cylinders loaded and carried on my rig to get me home.
This pic was taken a few weeks ago while on walk in rock-chuck country.