Salvo's
 

Has anyone found a way to narrow the spread of a slavo shot?

Not yet.
There may be something i the commands.cfg or menu.ini that controls this.
Looking at the file structure, it looks like a lot of stuff has been recycled from SH 3 and 4 so I wouldn't be surprised if it was in there somewhere.
If it is there, some modder is gonna find it eventually.
But in the game as it is at the moment? No.

Is the spread that bad? Have not tried it yet.

But considering that torps are not the unltimate ship killer anymore I was going to start using this to get the kills, since it seems that for most ships takes 3+ torps to do much of anything. Add in duds and you have to about use 4 torps for ships anyway.

You would have to add the dials from SH4 and edit it into the pages of the menu ini. Not easy and my guess impossible, I could never get the attack map in SH4 to have the TDC dials instead of going back and forth from the scope to set the TDC. I never, and others never did figure that out. This is gonna be the same thing.

This is the one thing that bugs me.

I used salvo but didn't get a good look, two missed on a shot right to the middle of the first ship you sink. I would probably manually do it for smaller ships like merchants, would be perfect for longer warships.