"Perfect" is what the sportsman prefers.

22lr, I have shoot lot of different animals with it in my youth...I will not elaborate further.

270 Win (bagged most of my animals with this cartridge using 150 grain bullets) and 7mm wby mag (I shoot mostly 160 and 175grain bullets in 7mag and am not fanatic squeezing the extra fps, prefers accuracy)

375 h&H or 375 Blaser got mild recoil and excellent for lots of big game. 250 grain for longer ranges and 300 grain for everything else.

I have 416 Rigby on magnum mauser in the making but its mostly beacuse I want one....passion mostly.

If I would persue a careeer as PH I would get a 500 Jeffery built on magnum mauser - stopper.