An interesting spin on the 6.5x55 is the 6.5 Addiction. They bump the shoulder angle up and take a lot of the taper out of the case. The idea was for a round that used the most plentiful and cheap Lapua brass in a short action with mods to make it low maintenance (I.e. minimal to no trimming of brass). Yes the bullets are loaded deep in the neck but that doesn’t seem to matter.

https://forum.snipershide.com/forum/snip...ction-swedemoor