If your primer pockets are a tad on the loose (and large) size, the primer could be moving fractionally forward with the impact of the firing pin and not getting a clean strike.
Or it could be as has already been mentioned, faulty primers.
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If your primer pockets are a tad on the loose (and large) size, the primer could be moving fractionally forward with the impact of the firing pin and not getting a clean strike.
Or it could be as has already been mentioned, faulty primers.
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Primers should be bottomed out. If they are not fully seated then they will move forwards with the impact of the firing pin, weakening the strike. Below flush is OK, above flush is not OK.
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About 5thou according to Chuck Hawks: When reloading, always seat primers slightly below flush with the head of the cartridge case. This insures that the anvil is properly pressed against the priming compound for reliable ignition. Failure to properly seat primers is the biggest single cause of misfires in reloaded ammunition. A good depth to aim for is .005" below flush. With some experience this can be determined by feeling the case head after the primer is seated. Any primer that is flush or protruding should be very carefully removed and the case reprimed. Decapping a live primer can set the thing off, so behave accordingly and take all necessary precautions, including ear and eye protection.
http://www.chuckhawks.com/primers.htm
Other references, 2-6thou.
Al
Banned
Are they Gynex primers! Bought a load for my club, very hard. My Marlin 30/30 needed several taps to ignite them. i have never noticed any problem with Sellier and Bellot, however they are seated.
Mike95
Registered User
Sounds like a primer issue rather than the seated depth i always thought that a primer fits into the pocket as far as it will go? if you have had the same problem in another gun then i would have thought it was not the striker spring but the primer itself
Registered User
You also need to keep the primer pockets clear of crud.
Should have one these
http://www.henrykrank.com/index.php?...oducts_id=1584
Last edited by Simon_S; 05-04-2014 at 07:57 AM.
Registered User
Yep, clean out the primer pockets with a primer pocket cleaning tool or a primer pocket uniformity tool (which is what I use). Also all of the precision shooting reloading books suggest seating the primer to ensure the legs if the anvil inside the primer are firmly seated against the bottom of the pocket, this should involve crushing the primer anvil slightly. Also I would try using one of the more mainstream brands.
Anyway my 5 pence worth. ATB
Simon
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