I've got a K98 Muaser, given to me by my best friend for a wedding gift.After many days at my local range getting to know it. I took it to Camp Perry to shoot in the CMP matches and it started miss firing. Needless to say I bowed out of the compitition. When I got home, I broke it down, the fireing pin looked good, the spring looked a little worn so I replaced it. Still wouldn't fire all rounds, I then replaced the pin just in case, and it still only fires about half the rounds I put in it. Could this be the ammo I'm using? Or a problem I'm just too close to see? The head space seems right, there's no damage to any brass shot through,and no tell tale sights to make me think it might be off. Thanks.