My 500 A-Square rifle, made by the A-Square company, holds three in the magazine and one in the chamber. I like the caliber, gun as is and have had alot of fun shooting/hunting with this impressive cartridge/rifle combination. Some do not like the stock, rifle or the caliber and that is okay. I have enjoyed mine.

I have been calculating and the .550 magnum and .500 A-square have a energy of around 11000 joule. And my .460 Wby have around 10000 joule. So if I am going to buy a bigger rifle it would have to be a .585 Nyati or .600 OK!

OK, if you are focusing on energy, you are missing the point. Energy does not kill big animals and is largely irrelevant. Look at Taylor KO values instead.