I used my old issue Ka-Bar for decades (it was eventualy stolen). The leather handle held up fantastic during all those years with extensive field use in all conditions.
The advice on sno-seal and beeswax is right on the money. To use beeswax just melt the wax and paint it on the handle (better if you preheat the handle on warm in an oven for an hour or so with the door partialy open) then paint on the beeswax with a brush let it sit in the oven on a cookie sheet for 15 min or so to soak in, then wipe off the excess with a rag. Once everything is cooled down vigorously buff the handle with a rag.
The advice on sno-seal and beeswax is right on the money. To use beeswax just melt the wax and paint it on the handle (better if you preheat the handle on warm in an oven for an hour or so with the door partialy open) then paint on the beeswax with a brush let it sit in the oven on a cookie sheet for 15 min or so to soak in, then wipe off the excess with a rag. Once everything is cooled down vigorously buff the handle with a rag.