As long as you don't use excessive pressure in your loads you can easily get away with neck sizing. You will have to use a neck size die because there isn't enough taper in the body of the case to do it with the full length die (partial sizing).
I'll echo what GB said. If using 30-30 brass I necksize after fireforming,If I am using Federal 7-30 brass then I full length size the first time and neck size after that. Never had a problem. Hornady makes a 7mm short neck sizing die that is not cartridge specific,but caliber. Therefore,it works for several different cartridges,just adjust the height. Got mine from Graf and Sons.. :grin:
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