Brennon,

What about the DSB Dumoulin M98 actions that Sarco is selling?

They are not perfect, but they are reasonably priced, and have most of the bells & whistles, like an inside the TG hinged floor plate release button, a straddle floor plate, an adjustable trigger with a steel housing, and a 3 position M70 type safety. And apparently they are made of a reasonably modern alloy steel.
Scope rings for the dovetailed square bridges are reportedly available, however they are not inexpensive.