I only carry my guns in lined holsters to save the blue. For N&K
frames you are talking $100 for a decent holster at minimum.
I have Bianchi & El Paso mostly and all my guns are 6 to 83/8
barrels with Target hammers. The bottom line is the holsters they
sell for these guns will fit slick as a whistle, unless you have a
Target hammer. If you do the strap will come up short of snap.
It is a PIA to get them stretched without dis coloring with water
or leather solutions.

Also why do makers insist on small belt loops for holsters for
guns that weigh near 3 lbs loaded?

I'm tempted to buy a popular gun that I don't like just fot the
joy of having a endless selection of holsters to pick from.