100m
Yes the Marlin Model 1894FG is chambered in .41 mag.
You can download a manual here - http://www.henryrepeating.com/freestuff.cfm
This question has been previously answered. NO major current producers are known.
There does NOT appear to be any current major producers offering a lever action rifle/carbine chambered for the .41 Magnum cartridge. There may be some custom made guns, finding a custom rifle gunsmith will require internet research.
If you mean a Ruger Model 96, $300-$400, depending on condition, box, papers, etc.
I'll give you $350 shipped.
You need to know the make, grade and model. 270 mag rifle could be anything
Yes.
The rifle does not need to be disassembled to clean it. However, if you want to, the owner's manual has instructions for PARTIAL disassembly. The link below will take you to the owner's manual for that rifle. Would suggest you print and keep a copy.
That doesn't make any sense as a question and not only did Remington not make this gun no-one could have made a lever action firearm in 1846 there was no suitable ammunition much less 44 mag.
$125