What? No cap-N-ball revolvers??? If I'm wandering the woods around home, I'll carry a "light" caliber revolver. Up North, it would usually be the .44MagSBH, but up North I usually carry a rifle or shotgun, or musket, so the sidearm might be anything, although I enjoy carrying a cap-N-ball.
1863 Remington New Model Army in Navy caliber.
The 1860 Colt is another favorite.
Of course it's not always the 1800's in my mind, I like to take Grand-dad's Luger on a walk. OOOPS! Not a revolver. Big mistake. sorry!!!
The EL Patron in .45 Colt is a good do-everything-gun, and fairly light, comfortable to carry.
As long as I have a rifle with me, musket or shotgun, this AirLite .22LR is a super favorite of mine. Almost "weightless".
Up North for sure, or anytime I don't have a rifle or shotgun, this old Super Black Hawk .44Mag has been a trusty companion. I've had it forever.
I have other pistols I like to take hiking, but those are my choices most often, most of the time. But most often, the Remington, the Colt, or a 1862 Colt Pocket-Police...just because I enjoy them more.