Depends on whats inside the shorts.I would advise against pouring your molten aluminum in shorts.
Cans cast fine. The problem with them is their so thin. That much surface area creates a large amount of waste that has to be skimmed because of the oxide coating.
I'd like to add I am a master machinist, and that is a lot of work,but his machining look good, but for that much work, why not just start with a billet or 0% receiver
Aaron the grumpy old tool maker
...the grumpy old tool maker
Ghuns......you know a tool maker or two? Lol..........
Aaron