Come on Danny Boy, toughen up!!!!!!!!!!!!!!

I have used both of the calibers on elephant and I tend to agree with you in that I am not sure which penetrates best. However, I am convince, in my limited use, that the .600 hits harder and they both penetrate enough. I have ponder the same issue of the more pointed .577 and the blunter .620. If every one want flat nose now, then the nod should go to the .620.
Now my .600 that I hunted with was an H&H proofed @ 110 and I loaded accordingly. If I remember correctly all the .577s I used were late Kynoch from just before they originally shut down. (Berdan primed and modified cordite)

The .600's are too heavy for a half crippled old man man to lug around or I'd have one. I kinda liked the VC I handled at their booth in Dallas, but I sure like the way my H&H Royal 500/450 handles shoots and kills.

Anyway, glad to see you aren't banned here!