Nice rifle by the way. Very nice.
To hit on a few notes from the thread here, with moderate loads you can expect 20+ reloads on your brass. I once loaded a 30-30 case to failure, to see how many reloads it would take. You might find it interesting
https://castboolits.gunloads.com/sho...Case-Life-Test
Pistol brass ends it’s life in one of two ways normally. Primer pockets getting loose, which will let hot gas by and burn your bolt face. This is more an issue with high pressure loads. Or splits at the mouth, maybe the body. The mouth splitting is the most common reason and could be mitigated by annealing.
As far as trimming. I trim all my revolver brass once so that it’s consistent. Consistent crimp is important for accuracy, and anything other than a collet crimp die relies on consistent case length.
44 mag or 357 mag, in full pressure loadings will stretch cases and eventually may need trimming again. Usually though they don’t get reloaded at this level enough to cause lengthening and will instead get shorter. They get shorter from working the brass during reloading, not firing. When they get longer, it’s because pressure grips the front of the case against the chamber walls while the pressure pushes against the case moving its base rearward, stretching it.