Can an aging barrel blow primers?

rustyinbend

GySgt USMC 1976-1992
Full Member
Minuteman
  • Dec 9, 2018
    2,259
    2,129
    Bend, Oregon
    I have a rifle-ammo combination that "never" used to blow out primers ... it's a 6.5-CM LWRCI REPR shooting Hornady 140gr American Gunner cartridges. Shot the combination for "years" and never blew a primer. Now the same rifle ... which BTW is showing signs it needs to be replaced ... is blowing primers in this factory ammo about 10% of the time.

    Is this a "thing" ... old barrel - blown primers ... or should I be looking elsewhere?

    BTW ... this doesn't happen with my handloads ... only the factory ammo (that shot great for years).
     

    Steel head

    Feral kitten
    Full Member
    Minuteman
  • Aug 3, 2014
    18,167
    58,279
    Washington
    Generally as the barrel starts going away you’ll get loss of speed and pressure.

    As above check for carbon , 6.5 barrels can really get cruddy fast.
    95% chance it’s carbon.

    I’d also check boltface and firing pin as mentioned.
     
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    rustyinbend

    GySgt USMC 1976-1992
    Full Member
    Minuteman
  • Dec 9, 2018
    2,259
    2,129
    Bend, Oregon
    UPDATE ... talked to LWRCI and they gave me an expected lifespan on that barrel (2,500 rounds) that I've definitely blown past. They've got a re-barrel service that's very competitively priced ... all in only about 10% more than if I tried to find the Proof Research barrel and do it myself. I've started the RMA to return this to the mother-ship for a new barrel.