Kicking around the idea of a hunter built for use with subsonic ammo and a suppressor.

Not very knowledgeable so open to suggestions, here's what I'm thinking so far-

Looking at rounds like the 300 Blackout, 458 Socom, 308 win, 338 Federal etc. Have thought about a 7.62x39 using heavy cast bullets as well, bolt action so not worried about cycling.

Lethality wise would like to be able to take medium sized game at decent ranges, what kind of expectations are realistic?

Seems like with a subsonic slug you're looking at muzzleloader type ballistics, punch a big hole in and out, is that about correct?

Have a spare SA that is currently a .473 boltface but not worried about changing that.

Thinking a fairly compact rifle, basic synthetic stock, 16.5" barrel, something like a simple Leupold 4x etc.

Will be handloading, not opposed to casting bullets.

Obviously just an idea at this point, welcome to comments.