:-) The "Visible Loader" is not a very strong action to begin with. Most that I've seen have excess headspace, and usually "goose loose" in lock up. These guns were made before Hi- Speed .22 cartridges were the norm, and I beleive shooting Hi- velocity loads in them causes them to loosen up. If tight, they'd be ok with Standard velocity cartridges. Use only Standard Velocity cartridges in these old timers.
These are not easy guns to repair, and the cartridge feed lever part is tricky to make, or fit. Chamber ends are usually badly deformed. Parts might be hard to find.
Unless the gun is in very good condition, or you are capable of rebuilding/ repairing it yourself, you may want to consider a different gun for shooting. Paying a gunsmith to fix it could be quite expensive. Safe Shooting! -"gunsmither"