Originally Posted by sp6x6
I was working on some loads, 325 wsm and I HAD SPLIT necks on some in2-3 times, I have got 10 on 340WM , NOT using when gone.
The nickel plating is at most a few thousandths thick & the base metal is brass — just like in other cases. Necks can be annealed just as easily with nickel plating as they can without the plating. As such, I see no basis for your claim, unless you were not annealing these cases as you would unplated cases.
I have often heard scientifically unfounded claims that plated cases cannot be annealed. That is crap. I don't know who started that belief floating around the internet, but it is not true. In fact, annealing plated cases may be easier than unplated cases since the copper in the cases is unlikely to burn as you heat the cases, which means you are less likely to over-weaken the case as you anneal it if it's plated. The annealing process is purely caused by changing the temperature and will not be hindered by the plating.
I can refer anyone interested to a metal processing textbook from my manufacturing engineering days if they need to see this information in an established treatise.
The negative of plated cases is 98% cost. The risk of plating flaking off is small enough for me to disregard. If the plating was applied correctly, it will not flake.