Unconventional reloading technique?

Howdy folks, I have an interesting idea to save some money of sizing dies and was wondering if it's possible. Can you take the barrel off your rifle, I.e. an AI or terminus, and put a fired case into the chamber, take a ball peen hammer, and smack it medium hard to get your shoulder set back? Then for the neck sizing take said case and smack the neck with the hammer and expand it with the bullet?

Why don’t you skip a step, put a loaded round in the barrel, hit it with a hammer, and bam, just like that, instant fire formed brass. 😆
 
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