If you need flatness of trajectory, as in having to shoot over 100yards, sometimes well over (something the lads from back East have trouble visualizing) you will need a decent load.
110gr. 2F in a .58 is NOT a heavy load. 85gr. 2F should, however get you about 1,320fps. That is a good load for shooting little Eastern deer at 50yards. It is not suitable for hunting in the prairies
where your shots might be 120 to 150 yards. I've owned more than a few .58's over the years. With the .575" balls I used along with the .022" denim patching I am prone to use, I needed
120gr. 2f in my Zouave to get good ie:2 1/2" accuracy at 100 yards. My .58 Hawken that Taylor built me, would not shoot less than 140gr. and give the same accuracy. With 100gr. it would not
stay in your hat at 100yards. Accuracy at 50 yards was suitable for deer, but not good enough for further out. Something the target shooters ALL know, but is difficult for some others to
understand, is that if you want to shoot accurately at longer ranges, you have to use more powder. Out West here, it is a rare thing to have the terrain to allow stalking much closer sometimes,
than 150yards. The .58 will easily take game at that range- but - you will need to feed it to do so.
Learning to follow through due to slower lock and barrel time, is MOST important. ML's kick a LOT less than the larger smokeless counterparts you noted, especially with only 110gr. 2F (ie: big
game rifles).
This is my long range load. It kicks a bit.