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Seized Die

Need help.....
I hopelessly seized a Winchester nickel case in the Redding 300WinMag FL3V sizing/depriming die in my RL550B. I am sure I ruined the die trying to remove the case.

I ordered a replacement die but I must have selected the wrong one because it is a Redding 300WinMag NK5P.

I suspect the original stuck case is a result of me improperly lubing it.

What is the correct replacement die to the one I ruined and should I avoid trying to reload Winchester nickel cases?

Any advice is welcome. This is my first attempt at reloading rifle ammo.

Heat it up and peel the shell out

You could also send die back to Redding and I believe for a nominal charge they will fix your error. Give them a call.

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