L-R 250gr FTX, 250gr Shock Wave, 300gr Bonded Shockwave, 275gr Parker Ballistic Extreme, 325gr .458 FTX.
These were from my smokeless ML days, the Parker is a very accurate bullet from the closed breech 450's, but you can't drive them much past 2300fps or they will leave a little ring of jacket in the chamber. I think their match hunter series have a thicker jacket and might hold up better. Hoot has resized that .458 with decent results if I recall right, might be a good option for those who want a bit more weight.
pic of the jacket ring. I've had this happen in both the 450B and 45 Raptor bolt guns. Only thing I can think of is the bullet obutrates at the base leaving the chamber mouth and then gets sheared off. I've had the same thing happen with my 358aimm using 180gr XTP's above 2200fps which also have a thin jacket.