You definitely could take an ele with that 86 50-110.

My 1886 45-90 has taken multiple cape buffalo with the Kodiak 450 grain FMJ at 2150 fps.
It also took an ele with NF and Punch bullets at 2000+; on frontal brain shots, they shot through
the bone, brain back of the head and into the body of the ele. All those loads shot through two cape buff on broad side shots.

With proper bullets and loading, the 1886 can take any critter that walks or crawls.

And loaded down with 300 grain soft points, they are good deer rifles.