Took Remington 700 to range to shoot. Rifle externals all very clean. Chambered and attempted firing. Didn't fire or mark primer. Removed bolt and attempted to replace and it was frozen so the rear of the bolt wouldn't align with rifle action. Called my son. He told about using a boot lace and dime to take the bold apart. Confirmed his information on ...tube. Took the bolt apart, cleaned, oiled. Put everything back together and the rifle works as designed. Boot lace or paracord and a dime. Or spend $20 on a tool. Or hire a gunsmith.