So my new ruger mk iv stainless target is on its second trip back to ruger. I bought it new and it jammed about once every magazine. I sent it back to be fixed . It received a new bolt and a large list of repairs. So I get it back and no matter what ammo I feed it it jams about once every 50 to 100 rounds ( failure to eject ie stove pipe). So it is on its way back again for repairs. Anyone else encounter this?