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  #1  
Old 01-31-2020, 05:55 AM
lpsharp88 lpsharp88 is offline
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Springfield Range Officer Compact 9mm Light Primer Strikes

Picked up a SA Range Officer Compact in 9mm and am having light primer strikes. After the first range trip, I field stripped and cleaned it and also removed the firing pin and spring and cleaned the channel out. Took it back out yesterday and am still having issues with light strikes
Some details that may help
It ran a box of 50 Winchester brown box just fine
It only light strikes on my reloads, 2 different batches
My full sized RO, M17, and my friends 229 and 365 ran my reloads just fine (CCI standard SPP used)
Some things I think may be of issue
I have read that SA uses a lightweight titanium firing pin and extra power firing pin spring, so maybe the LW firing pin can’t overcome the spring resistance consistently?
May need a heavier hammer spring? Wilson makes an extra power version
Any other ideas on the cause? Attached is a picture of 3 rounds that have the light strikes. They are still completed cartridges, they didn’t fire, were ejected, and picked up
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7BF73E82-7430-4BD4-AD5D-7B5A8F492D6D_1580471687103.jpeg  
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  #2  
Old 01-31-2020, 06:38 AM
JamieC JamieC is offline
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I had the same problem with a SA EMP4, finally had SA replace the firing pin with a steel one, no more problems. You might get away with a heavier hammer spring although I believe the one in there is already heavier than a "standard" spring, not sure of the weight numbers. BTW, what primers are you using?
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Old 01-31-2020, 07:27 AM
Jolly Rogers Jolly Rogers is offline
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What brand of primer were in your reloads? A gun that functions normally with factory ammo and does not with reloads would point me to the hardness of the primers.
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  #4  
Old 01-31-2020, 07:38 AM
Steve in Allentown Steve in Allentown is offline
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Quote:
Originally Posted by lpsharp88 View Post
Wilson makes an extra power version.
While Wilson makes good stuff but they're not the only game in town. Take a look at Wolff Gunsprings.
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Old 01-31-2020, 07:40 AM
lpsharp88 lpsharp88 is offline
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CCI Primers are used in my reloads.
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Old 01-31-2020, 08:22 AM
gunnut606 gunnut606 is offline
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Here are your options :

1) Replace the FP with a steel one. I would not put in a heavier main spring, because it would make the trigger pull heavier and wear the sear and hammer hooks out faster, maybe not by a lot but it does.

2) Switch brands of primer to Win or Federal, there are plenty of them out there right now.
.
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  #7  
Old 01-31-2020, 08:41 AM
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RetiredRod RetiredRod is offline
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Probably not a primer "hardness" problem. Did you try second-striking the light strike rounds? Sometimes the primer does not get seated deeply enough during the reloading process and the first FP strike then "seats" the primer and the second hit will fire it.
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Old 01-31-2020, 08:48 AM
lpsharp88 lpsharp88 is offline
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I was debating dropping in a new FP, Ed Brown makes one of the correct size. I just heard from SA that they use a 19lb main spring in those. Isn’t standard 21?
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  #9  
Old 01-31-2020, 09:18 AM
lpsharp88 lpsharp88 is offline
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Quote:
Originally Posted by RetiredRod View Post
Probably not a primer "hardness" problem. Did you try second-striking the light strike rounds? Sometimes the primer does not get seated deeply enough during the reloading process and the first FP strike then "seats" the primer and the second hit will fire it.
Some fired on the second try, others took 3 or 4 tries
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  #10  
Old 01-31-2020, 09:34 AM
BBBBill BBBBill is offline
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Quote:
Originally Posted by lpsharp88 View Post
… It ran a box of 50 Winchester brown box just fine
It only light strikes on my reloads, 2 different batches …
Focus on your reloads. The factory worked. Regardless of what they did in another gun, the reloads did not. Exacting comparisons of your load's dimensions, components, primer flush, etc should be done to confirm or deny their part in the issue, Sometimes marginal reloads work in on gun, but don't in another.

Once you eliminate the reloads as a cause, move on to the gun.

Last edited by BBBBill; 01-31-2020 at 11:17 PM.
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  #11  
Old 01-31-2020, 01:04 PM
Steve in Allentown Steve in Allentown is offline
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Quote:
Originally Posted by lpsharp88 View Post
I just heard from SA that they use a 19lb main spring in those. Isnít standard 21?
Standard is 23lbs. Go to the Wolff link I put in Post #4.
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