The pic below shows Bridger flat nose brass bullets recovered from game. From left (all Bridger solids):

(1) unfired 550 grain 500 Nitro Express bullet,
(2) 550 grain 500 NE bullet fired into cape buffalo (body shot) - 60 inches of penetration
(3) 550 grain 500 NE bullet fired into elephant (body shot) - 52 inches of penetration
(4) unfired 500 grain .470 Capstick bullet
(5) 500 grain 470 Capstick bullet fired into elephant (frontal chest) - 72 inches of penetration
(5) 500 grain bullet fired into elephant (frontal brain) - 39 inches of penetration, stuck in neck vertebrae
(6) unfired 300 grain .375 bullet
(7) 300 grain .375 H&H fired into cape buffalo (frontal chest) - 48 inches of penetration, stopped in guts
(8) 300 grain .375 bullet fired into cape buffalo (frontal chest) - 46 inches of penetration, stopped in guts

Bridger solids will soon be available on-line from http://www.custombrassandbullets.com/