Don't know how they are made ,I just know they work. The photos show a 225grain accubond started at 2,850fps our of my 35 Whelan. Impact velocity at around 120yards was about 2,600fps. Hit a kudu front on and the skinners retrieved the the bullet from the ham. Around five and a half feet of penetration. The other bullet as good as the accubonds is the Australian Woodleigh projectiles
retained weight of 176grains
