So, gotta ask, why marksdwarf pistol?
Mathilde herself mused that, when you can't guarantee a one-shot kill, it's better to aim for the chest and shoot thrice than hope for a headshot.
Marksdwarf fills no role in our toolbox. The revolver is sufficiently accurate as a pistol that the difference likely won't matter, as Mathilde plain ain't a good enough shot that "the only limitation is the user" would make a difference. The revolver is otherwise massively better, firing thrice a round instead of once.
Besides that, Shadow Knives will soon fill in the pistol-range niche for ranged murder. The marksdwarf is doesn't hit harder, it doesn't fire faster, and the mechanical accuracy of a dwarven revolver is more than enough for a shooter of Mathilde's skills, which are good, but not that good.
And then, there's the fact that the best shooter with the best handgun will be handily outshot by a mediocre shooter with a decent rifle, because the rifle plain and simply has ten times the effective range of a pistol.
So, why not a fine rifle?
[X] [KRAGG] Hit Hard
[X] Tower of Utter Neutrality
[X] [SPIDER] They are military assets and thus the responsibility of Dreng.
[X] [SHOPPING] Go to Zhufbar look for a nice rifle.