Hello I know it's a choice but do the inlines really have a true advantage over traditional cap locks or flint locks in actual hunting situations if the hunter who is using them is proficient with his firearm of choice
I believe there is a huge advantage using a modern inline over a traditional ML in all the states in the US -
EXCEPT - in the 3 Pacific Northwest States!!!
With the rules/regulations that are imposed by the Pacific Northwest States for muzzleloader hunting - there in reality, is very little difference. Whatever I can do with this rifle:

I can do with this rifle:

This side hammer is even a closer match to the modern inline.

The old Renegade has a Green Mountain SS LRH barrel settled into the stock and this barrel even has a 1/28 bore twist - same as most inlines.
I really do not think the difference with the style of cap ignition plays a role in the abilities of the rifle - IF - you have the experiance to utilize either rifle. For a newbie, I would say that you would often have an easier time getting ignition with an inline.
Even the different projectile requirements of the 3 States, with experiance do not create a dramatic difference.