seriously looking at the men, their occupations, & the ranges & type of shooting they did...
I propose a couple of options...
1st... in this class, capacity is not needed, an easy to shoot easy to hide gun in a caliber heavy enough to get serious stopping power with one shot...
options ???
a nicely tuned 1911
a Ruger Alaskan ( 44 mag, or 454 casull )
a gun like my Air Lite S&W in 44 Special... maybe the 44 Mag variety ( Mountain Lite)
others ???
2nd... in this class ammo availability, ease of maintenance... still good stopping power is needed...
maybe one of the many plastic 40's...
if stopping power were of more importance than ammo availability... maybe a 10 mm
others ???
3rd... intimidation & fire power
Desert Eagle in 50 or 44
one of those 223 semi auto handguns
one of those short barreled shotties
maybe the 5 Seven with 30 round mags ???
personally if it were me... I would carry one out of the 1st group, probably the Mountain Lite in 44 Mag, & one out of the 3rd group, probably the 5 Seven