I can't shoot rifles much in general (arthritis and bad shoulder), so a score on a good brass case lot will last the rest of my life, and provide reload fodder to my friends who do. On the other hand, the AR I bought "back in the day" is probably only worth half of what I paid for it, at least until the next crisis. The guy who built it for me says steel cartridges are fine, and he'll fix it for free if I break it.

Not sure that it matters if it gets shot out, nothing special added to it that won't unscrew or unbolt.