The problem with more 'modern' rifles and open sights is that they aren't designed for open sight use.
The 54 pictured above has drop/comb height for open sights. I'm guessing you PF is set up for scope use and will suck greatly with open sights.
That's probably true of a Model 70 made today, but a pusher isn't modern enough to have that problem. A lot of guns from that era have a Monte Carlo stock that's a bit too high for irons and a bit too low for a scope.
Okie John
This is often true. It does depend on the shooter though and their physical build. I have a Firearms Int'l .-30-06 built on an FN action. It has open sights but because of the Monte Carlo, I can't get my face down low enough to use them.
These JC Higgins have enough drop that you can use the sights:
This Husqvarna also has enough drop:
but this later model Husqvarna has a stock designed for scope use and acquiring the sights is more difficult:
I like the XS Sights too, made one to fit this 8x57 Mauser:
One thing that helps in using "modern" stocks with open sights is to mount higher sights.