Each weapon will show a preference for one or two brands/bullet weights. You have to buy as many different types as you can afford and shoot to find out.
about 120
i bought mine used for 129 before tax in Ohio 2009
If you don't have a manual, contact the maker and ask for one. Find a gunsmith and ask for help.
There are several rifles and carbines that are chambered for the 9mm Parabellum cartridge. Among others, the AR-15 style rifles have been made in that caliber, as well as the Marlin Camp 9 carbine, and High Point carbine.
You are either using aluminum casing ammunition, or you are not cleaning your rifle as well as you should. With magnum rounds, (very high barrel pressures), alum. casing ammunition can expand more than brass and cause a jam.
No high point weapon has full auto capability as it comes from the factory.
A weapon capable of both automatic and semi-automatic fire. Usually firing a round with energy between a pistol and high powered rifle. Anything else is just a rifle or carbine, that fires in the semi-automatic mode, that LOOKS like one.
Never use ammunition that the weapon is not chambered for. If in doubt, ask a gunsmith.
It's not the rifle, it's the operator. <><><> Either the aiming point is too high, or the rear sight is set too high. Many rifles are "zeroed" for a given distance. Fired at a lesser distance, strike of the bullet may be higher than the aiming point.
Needs to be examined by a gunsmith.
Best left to a gunsmith
Need more information describing other markings found on the rifle. Tentatively, with a serial number that high, what you have is probably a Chinese Type 56 carbine.