I'm guessing you will need the 300/221 decap rod so that you can have the correct length, but you are going to want the 30 cal sizing button. If you used the 221 decap rod it would have a 22 cal sizing button and it wouldn't even touch the neck of your case.
That sucks that they are closed for so long. I hate having reloading down time because of dies when you are otherwise ready to go.
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