My Barrett Fieldcraft has been tested a lot with the 130 Accubond and the 130 Swift Scirocco. I've tinkered with RL 19, IMR 4350, several different primers and seating depths. The best loads were:
130 Swift Scirocco
42.5 gr. IMR 4350
Remington 9-1/2
Group size was .227
2660 FPS
130 Nosler Accubond
47.0 gr. RL 19
Remington 9-1/2
Group size was .424
2770 FPS