I’ve got a few old leather holsters - a black Bucheimer 16 or 17’, a black S&W B 17,both for revolvers, and an old 1911 GI.
All three have a lot of years on them and are pretty dry.
What do you recommend for treating them? Don’t want to soften the leather and want provide some weatherproofing. So maybe beeswax or just some wax shoe polish?
Also treat the insides as well?