With the 87 grain Absolute Hammer last fall, the propellant I settled on was IMR 8208 XBR. Expect other powders may have done well also though the temp stability of the IMR 8208 would be hard to beat.
Fore more conventional copper bullet configurations, I do not feel 8208 would be anywhere near optimal.
Fore more conventional copper bullet configurations, I do not feel 8208 would be anywhere near optimal.