Did the bolt move correctly before you put the shell casing in? When you say the bolt rotates freely, does that mean the bolt body rotates when you lift the bolt handle or does either one move independently? If the bolt handle and body are rotating together and you can lift the handle to its highest point, a short, sharp, buttwards blow to the bolt handle might unstick it. Mortaring it could also do the trick.
Was the brass you used FL resized? Fired brass don't make the best snap caps because they will almost certainly be larger than chamber specs, but one would hope that, even if the case neck was caught in the chamber throat, primary extraction would get it to a point where it could be extracted fully without unusual momentum-based methods.
That said, I don't think the problem is necessarily with the rifle, but rather I suspect the shell casing is the cause.
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