Thanks, Rocco. I definitely do not have any bowhunting experience with elephant, while I have some in european animals and Africa plains game; the deep respect for elephant, moves me to ask and ask; then, in this subject, it is to remark that opinions vary so much, to be disorienting.
On my experience with other animals, I found that the correct setup is vital; of course, shot placement is always the final key, but in the real hunting ground there are a couple or variables that are not under your complete control, and can heavily affect terminal performance.
Studying and also with the help of this site, I set some fixed points:
arrow shaft will be FMJ Dangerous Game;
broadhead will be the Aschby 315.
Now, the doubtful part: how much KE AND Momentum I need to be on the safe side ? This considering I am not used to shoot 100# bows, and variables are the arrow weight and it's speed.
My XLR8 at 71#: 950 grs arrow at 218 (KE 100,3; M 0,919), 1000 grs at 208 (KE 96,1; M 0.923):
My modified PSE Axe at 81#: 1108 grs arrow at 207: (KE 105,4; M 1,018)
My brand new Athens Big Five at 90#: 1108 arrow at 208: (KE 106,5; M 1,022)
Same bow at 99#: 1108 arrow at 216: (KE 114,8; M 1,062).
The easy reply might be the more, the better, but...
I.e.: with the XLR8, I can hold it aiming at full draw confortably for 2 minutes, shot thousands of arrows, hunted extensively etc.
Wth the Athens at 99#, the let off is fantastic either, and I can open it under ideal conditions (it is only 5 days I got it delivered !!!), but after maybe a heavy week of hunting, a 5 hours walk in the heat, while maybe affected by some intestinal desease, etc. ?
The PSE is a great and fast bow, but it's let off is really aggressive, and after some 40 seconds aiming at full draw I start shacking.
I would really be happy to have the experienced opinion of You all, just bec. I respect You AND the animal.