You're right!!! Another prime example is the small ring Mauser rifles!!! The Swedish M1896, M38, and M94!!! I have seen, and shot a few that were rechambered for 22-250, 243, 308 Winchester, etc!!! All high pressure cartridges!!! The Standard 6.5x55 military issued rounds where around 46000 to 47000 PSI with a 139gr BT!!!
But, in 1963, the factory that made most of those military rifles, pulled surplus rifles and made an open sight, 29.5" long barrel target rifle called the Model 63 GUSTAF!!! They were made for mainly 300 and 600 meter International target competition!!! I have one, very rare, made with the 1st lot of M1896s actions made in Germany (STAMPED 1900). They later, made the Model 80 for England and it was chambered in the 308 Win!!! If a small ring Mauser can handle that kind of pressure, the large ring SHOULD handle 55000!!! Have a qualified gunsmith check the action before shooting these rifles!!!
Even some Springfield M1903xxx variants in a certain Serial Number range, should be avoided from firing or rechambered due to a bad hardening process of the receiver!!!
The bad reputation of the military surplus Mauser rifle is that some rifles were damaged in war time, or improperly stored (Carbon Steel tends to pit when exposed to water and/or corrosives such a mercury residue from the primers and powder residue), and were not safe to shoot at any pressure and made there way into the USA and into other countries!!
The Mauser rifle design was stolen by our Military, other countries, and most American and some foreign rifle manufacturers!!! The Mauser Bothers were the true inventors of the bottleneck bolt action rifle!!!! Paul Mauser tends to get most of the glory!!!!
Bill!!!!!
Historic Note: All the Swedish Mauser rifle stocks were submerged into BOILING linseed oil!!! Not coated with BOILED linseed oil!!! Boiled linseed oil has fast acting hardeners added to the linseed!! The dunking process basically fried the wood by displacing the water with the oil!!! Much harder stock and less susceptible to warping or bending!!!