I no longer have a 44 but my 686 wears a Holosun 507C on an Allchin mount. Way better than irons for me.
I have another 507C on my daily carry Glock 19 and two Holosun 407C’s ( same sight without the option for circle dot reticle). One is on my Glock 45 match gun, the other is on my Glock 21. I believe if they will stand up to riding the slide, they will stand up to any 44 magnum load. I don’t shoot the 686 much anymore but I shoot the Glocks every Saturday and have never had a problem with the Holosuns.