Re: AK 47 bullets not feeding into chamber
Ok, since nobody is asking the detail questions I will.
What make AK is it? A Romanian WASR, Polytech Lengend, FEG SA-85, Egyptian Maadi, Yugo M70. There are a lot of options, and they vary wildly in component quality.
Who built it and on what receiver? Is it in an original receiver or a US made receiver.
What magazines are you using? Original steel AK mags, Pro-mag polys, Thermolds...
What ammunition are you trying to shoot? The AK, like the 1911 and a lot of mil weapons, was designed to feed and shoot FMJ's. Anything else like HP or soft tip will jam.
Attempt to chamber a round with the dust cover off. Does the tip of the round stop below or above the chamber? If its above, then jacking with the chamber throat is pointless, if its below any precision "filing or grinding" on the guide will just make it worse.
Fill in some details and you might get some friendly, educated advice. Oh, also, maybe try a forum that specializes in your platform. This is a precision shooters hangout, not many here have much use for an AK other than as a toy, or to indentify a tango.
Good luck.