That is why I prefer the end loading Henry BBS over my Marlin 1894. Maybe I need to do some deburring/chamfering?
All the loading gate has to do is stay closed, just like
@Bret4207 said, but it's common to encounter them with enough spring force to keep a frisky baby rhino out.
ALL burrs must go. Since the 92 is comparatively more complex to tear down/reassemble, it pays to clean up every possible problem while you have one down. You can thin the loading gate spring from the back to lighten it up, just don't heat it to lose what temper it may have and do NOT leave any tool marks on it, particularly perpendicular to it's length. POLISH it bright and make sure the tool marks are gone, not just shiny, or you'll create a stress riser.
@JWFilips would likely be the fella to provide the best advice on "flat springs," but I've reduced several over time and haven't had one break yet.
"Softening" the edges and polishing after removing the burrs around the opening, and on the end of the gate do not remove a lot of blue, in fact, most people don't notice it and it's all where it would eventually wear off anyway. The shine from the polish make it very difficult to see in comparison to the adjoining blue. I could stick my pinky a half inch inside the port with the loading gate acting like a snake's fang and pull it back out without pain or blood. No reason to put up with that, and it's faster to load and easier on your brass and soft bullet noses.
The magazine spring in mine was WAY over-powered too, which doesn't help the loading gate issue at all. Mine was a 16" barrel and I removed four inches of magazine spring. I was actually able to get nine rounds in the magazine without any effort or trouble. If I miscounted as loading, I knew when the last one wouldn't go all the way in. Rack the lever, stuff that last one in and you've got ten rounds of 357 at your service, AND the ability to "top off" while keeping the rifle shouldered and the muzzle trained on something dangerous.
I don't mean to come off as an "expert" on the design, but that one gun gave me an education I won't soon forget about. Tuition paid in full - in BLOOD. I cannot think of a part on that gun that I did not have to mess with. It all started with the googly-eye brass bead on the front sight, and Rossi wouldn't send a replacement without getting the bad one first. I filed a notch where the bead was and soldered in a brass inster and made it more of a patridge sight.
The receiver sight was a NOS Williams 5D for a Remington
740(?) with a curvaceous back, which I flattened to fit the slab-sided 92. I mean to tell ya, that was the EASIEST sight-mounting D/T job I've ever done. Anyone with a half-way decent drill press could do this one and it was a MAJOR improvement on that stubby little gun.
I'll shut up now, but if anyone with a Rossi 92 has a question on "fixes," I could probably remember what I had to do and how I did it. I even had to tune the cartridge guides and lifter (carrier) significantly. I'm no gun smith either - just stubborn and patient when I need to be. Took a year to get it all worked out.
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EDIT: Corrected Remington model number, added link to photos of subject carbine