Cal .50 case + .22 bullet = ???

[RamHunter]

Bought a 50 cal bullet the other day, I think it was a military round, long and heavy, not a handgun cartridge. Well I was thinking what would happen if the neck was reduced to accept a .22 cal bullet. Suppose there was a rifle built for it what kind of accuracy and fps, would one expect?? Just wondering I know it isnt practical.

[CoonDawg]

Can you say no barrel life

It probably has been done , just because.

[BozoWise]

Tried working on that one since I have so much brass, but no barrel maker wanted part of it. Not even with 30 caliber bullets. I wanted to cut down the case length also before sizing.