If it's a full-strike depth in the primer, email the manufacturer for their instructions. They commonly want the box of ammo, and will send freebies in replacement.
If it's a light strike, HogDogs is correct: Disassemble the bolt (or have it done) and make sure it's clean inside. A field expedient would be to soak and then slosh the bolt around in some gasoline. Follow up with a very light spray of gun oil and wipe it down. Then, re-test. But disassembly and inspection is best.
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