My favorites, in order;
.264 - Sugar Ray Robinson
.277 - Rocky Marciano
.284 - Sugar Ray Leonard < this dude cheat`d for his last championship fight , Marvelous Marvin Hagler won that fight .
.257 - Roberto Duran
.308 - Joe Lewis
.338 - George Foreman
< Foreman was the best heavy weight boxer of all time nobody could stand and fight with him
i own all these cartridges but if i fly to hunt i always take the Rem. 7 mag. reason ammo is easier to find if i need more.