Went to the range today with my m44. Just opened a case of chinese 7.62x54. Finished off my mfs rounds then started into the others. Right away I noticed they were difficult to close the bolt with. Out of about 8 rounds 3 were split upon inspection. Went up the road and got a box of mfs fmj's. Shot the whole box without issue. So now I have 872 more of these chinese rounds I dont want to shoot...... Anybody else run into this. It must be the ammo, Ive never had an issue with the rifle.....