At some point in the 2000s , Pietta went with a better brass alloy
The old butter soft Navy Arms Ubertis from the 70s and the FAPs, old Pietta brassers etc had very soft frames and pinned in arbors. Apparently they were expected just to be shot occasionally or with blanks by reenactors. Arbors pulling out was as big an issue as frames getting beat up
After decades of brassers shooting loose , Pietta made them able to actually be fired a lot.
According to old "wisdom" I'd have shot my two brassers loose yesterday with nearly 100 rounds each.
I have hundreds of rounds through all of my brassers, which isn't a lot. But one particular pair of .44 Colt Brassers I own, I've made no attempt to keep loads light , and I have burned up several 100 round boxes of balls with 30gr loads of 3f, which is a .45 Schofield load for reference......Pyrodex P with whatever the spout of a Thompson Center U View flask holds for an entire afternoon, or I've topped them off with 1F and blasted away. Not a single sign of ratchet dents in the recoil shield or any stretching .
People have reported shooting old brassers loose in one day , so that's definitely not the case with newer ones.
A YouTube guy has a .44 Colt Brasser he claims has several 1000 full power loads through it and no change to any specs when he mic's it
Within reason , unless someone is trying to beat one up with 40 grain charges of 777 or something, I feel like a Brasser is as good as a steel frame. The cost difference isn't even a lot anymore, it's more about cosmetics. The steel used in the steel frames is very mild too, as were the original frames that were basically Iron.