THERE IS NO ALL PURPOSE WEAPON

For the trail, I would select a .45 Long Colt in a Sheriff Model...short barrel, easy carry, safe, single action, maybe hot loads with H/P. Mine is a Ruger.
For town, in a purse, the Tarus Double Action snub nose in .22 mag with hollowpoints is a good choice.
My daughter shoots a .22 H/P which explodes a plastic gallon water jug...my .45/70 appears to have no effect but to go right through it.
Could be very painful if you are a water jug facing my daughter with .22 H/P.
Bigoleindian