We are all talking about which caliber/bullets/velocity etc. for deers.
The main thing is a good shot!!!!!!
If you shoot a .30/150 gr. SP (which don`t open up) at 100 yds at 900 fps - you will get a hole through both shoulders.
Because of low velocity - you will not get any meatdamage.
Bloodspoors are also bad
so you maybe have to follow 200 yds tracks
With a 45-70 hardcast - you don`t need to follow the tracks more than 70 yds.
My favourite calibers is: 375 JDJ in TC and 454 and 45 LC in a revolver.
And then
: I`m sure that a lot of you have other opinions