I had a 356 Win in an Encore. If you do the Encore I think the 356 is best due to the rim. You can also use 358 brass you just need to change the ejector. But if you get 100 rounds of brass you will never wear it out. I shot 180gr Hornady SSPBs and 180 Speer bullets almost exclusively. My barrels were MGM early Shilin blank barrels. I had both rifle and pistol length.
Guns shot 1/2? groups

Had a 15? with brake 15? no brake 20? rifle and 22? rifle

All heavy taper MGM


Killed a bunch of [censored] with the pistol.

Traded the pistol setup for a NIB xp100 in .223 and bought a xp100 custom shop gun in 35 Rem