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Not really. Neck sizing is probably the better option for belted cases - until the cases get hard to chamber Then you'd have to full-length size them again.
The danger with belted AND shouldered cases is the ease with which one can push the shoulder back too far while sizing. Then, even though you haven't affected the "official" headspace fit (at the belt) you create a dangerous undersize condition at the shoulder. When fired, the brass has a hard time expanding into all that airspace and can rupture.
But most sizing dies are designed and machined to avoid the biggest part of that problem, so even that caution is "no biggie."
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