single action
Sounds to me like you've got the semi and double action aspect of handguns covered, now....what about a single action?
And ....youi've got the power spectrum covered as well, .45 and .38/357.
So what about a .22, specifically, a .22lr/.22 mag, namely, a Ruger Single Six w/ interchangeable cylinders?!
Mine has displaced my .357 and 10mm on a number of occassions on trips to the woods. I keep the .22 mag cylinder in mine mostly. From my long barreled model, it hits noticeably harder than a .22 from shorter bbls, and will cleanly drop a coyote if hit well. It is not so loud that improvised ear protection won't work (tissue to the ears) and not so expensive that if you choose to roll a few cans or rocks on whim you'll regret it. Fifty ctgs take up about as much room as a bar of soap in a pack.
Don't know nothing about javelina, other than I'd like to combine a hunt for them and spring turkeys some day in the SW.