I have a Sportco Mod 62a 22lr with some annoying issues - running along the lines of misfires/light primer strikes on a few different brands of factory ammo.
i've done some searching for parts on the gun itself but haven't really come up with any information apart from buying another rifle

Could it be as simple as the firing pin spring being too weak and causing this issue?
Would love to know your thoughts.
Cheers,