There should be enough spring in the brass to hold the next bullet. You will, however, have to expand the case mouth again to seat the new bullet without scraping it up. This especially true with lead and cast bullets; an unexpanded case mouth will shave metal off of them. This not only alters the bullet, but the shavings will foul the bore and the business end of your chamber. This last problem can create dangerous pressures by getting the chamber so tight case mouths don't have room to open up enough to let go of their bullet when fired.
If you decide resize anyway, remember to take the decapping pin out of the die, or you will waste a primer.
Nick
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