The 94 has a bolt that locks at the rear, not the bolt head.
The lever mechanism goes 'over center' to lock the bolt.
Thus, the lever action rifle usually has an excessively long chamber
when the bolt is locked in battery.
In use, most chambers stretch. They get longer, not shorter.
A lever action with headspace problem usually has a very long
chamber, which still chambers ammo perfectly well.
But the brass gets expanded badly and accuracy gets worse.
If that's your problem, the fix isn't difficult or expensive.
To shorten excessively long head space, the barrel is unscrewed
and the shoulder cut back on a lathe. Neither task is difficult
if you have the tools. My gunsmith charges $100 for it.
The barrel then screws farther into the receiver, shortening the chamber.
To get the chamber to the right Go/NoGo length, he might use a reamer.
But that's a bit harder on a lever action than most bolt actions, sometimes
they skip that step but I would encourage it. Maybe $40.
The work often leaves marks on the finish, the gun is usually blued.
That's another $100 or so.
On the other hand, a cheap gun from a pawn shop might not be worth
the total expense, unless headspace is so long the gun is dangerous.
If you think the headspace is too short, that might be a dirty chamber
or something at the bolt or bolt face is messed up. Lever actions generally
don't ever 'shorten' headspace.
"Won't feed from magazine". The cartridge doesn't go from tube to
carrier (or 'lifter'), or the carrier doesn't lift it up, or the bolt doesn't advance
the cartridge into the chamber? Be more specific. It might just need cleaning.
Note: Depending on age, the carrier changed over the years. Parts for M94 are
everywhere but be sure you get the right one for your gun.
I spoke with a 'smith in my state. That guy thinks he can fix it pretty easily.
When fired, primers seem to "set back" (I'm not a reloader but that's what someone said was happening as the primers seem to protrude to the rear on fired cases) and the bolt will close on both a "no-go" and a "field" gauge.
I'd pay a couple hundred to get this gun working....it'd still be a nice gun in the end and the wood on it is just GORGEOUS.