90 gr black powder with Elephant powder differing from Swiss by about 20 percent it might make a difference what balckpowder you are using. Since different guns can give quite a bit different velocities with the same load it would be best to chrony your load. Considering that bullet has a low BC [I used it for a while if I remember correctly it has a BC of .17 so David is so close as to make no differance, the trajectory as you posted it is in the fight ball park. If thats a problem for you, try the 200gr Shock Wave 50/40 it has a BC of .267 will shoot accurate in a lot of guns has a high sectioal density[ much higher than your .45 240 gr] and with a 100gr of Swiss will give you a much flatter trajectory. I have used this bullet on deer and boar and it is very effective. Lee