I am unaware of any tiered loads or recommendations for European firearms. And the reason is: Proof Testing. The European proof test program was specifically designed to remove old, unsafe firearms. That is why American's notice Norma 8 mm Mauser ammunition is a lot hotter than American made 8mm Mauser. Europeans have weeded out old, worn out military actions at the Proof House.
I only know a little bit about European proof testing. It used to be that a firearm or barrel could be not be transferred to a different person without undergoing proof. And from I read, the Proof Houses check dimensions, probably mechanical condition. If the firearm fails, at one time the firearms were chopped up. That might have changed, I read in a thread where the seller would be stuck with a rejected firearm or barrel.
The European system assumes the buyer is ignorant and needs to be protected, the American system assumes the buyer is an expert and knows everything.
You think American car inspection is bad, go to Germany. The Germans thoroughly check out your vehicle every year, inspectors have check sheets, they will require replacement of an emergency brake cable with external rust. If one tire needs replacing, you have to replace all tires, and you have to buy new German tires. No retreads, or crappy American tires. German highways do not have the tons upon tons of retread tire debris that American roads have. You drive into inspection, and you will come out with a list of things that need fixing. If your vehicle breaks down on the Autoban, you will be fined, no hugs, kisses or love for those with unreliable vehicles.