Yup those junky European single and double rifles, and drillings, chambered in all calibers, must be junky weak German crap..
Blaser Model K770 is available from factory in 300 Weatherby.. A known putt putt low pressure cartridge.
They have had insert barrels Einstecklauf ( Krieghoff, Blaser, System B. Fritz, Princess... last 3 available in .22 Hornet) that are actually fitted to each chamber, (and are adjustable as to POI by nice sliding tapers..)
for decades...
More cheap junk... Never works... Oh wait.. These are are all inspected/Proofed by German proofhouses, and factory sighted. With test targets delivered with gun.
And most of these guns can be custom ordered in any caliber... Extra price for rimless cartridges.. Little more work on extractor system..
The double set (feinstecher) triggers are also know to be junk.. 3.5 or less trigger pulls, crisp as glass always... Terrible..
Not everyone is in the Canadian bush.. And some can actually afford to buy a quality rifle...
There were actually a couple of modern US attempts to build a decent break open rifle. The TCR 87... Of course crappy TC barrels don't help..
As to a Hornet in a standard cheap Break open.. No one has mentioned the little itty bitty problem of firing pin diameter.. Large pins WILL allow primer flowback or worse..
A proper rifle caliber break open, will have a High pressure cartridge sized firing pin, not a .100 shotgun primer sized one, in a sloppy hole...