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Nickle plated brass serves two basic functions:
1. Reduces corrosion -- that "green grunge" or "black spotting" on brass cases.
2. Smoother surface allows easier extraction.
Nickle cases can last through a lot of reloads IF you don't bell the case mouth very much during reloading AND you fire moderate loads out of them.
If your dies get contaminated (e.g. you used case lube on dirty brass before resizing) they can leave scratches in your brass. On Nickle cases this will gouge the nickle off and cause weaknesses that result in split mouths very quickly.
Lastly, when reloading, once you find a good load for your firearm, load a few nickled cases and test it (especially if your nickle cases are a different brand than brass cases). Once satisfied, you can make your "serious" loads in nickle cases for easy identification -- that is, all of your defense/hunting reloads are in nickle cases and range loads are brass.
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BillCA in CA (Unfortunately)
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