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  #1  
Old 04-12-2011, 04:15 PM
SlyOneMrGrinch
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Light Strikes on my HMR



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Like the subject line says, my 17HMR Cooper (57-M) has started light-striking on the rim-so far, it has always fired on a second cock & trigger pull.

I have had it for over two years, did not fire it while I spent a lovely year in Afganistan with the Army (with absolutely no previous problems), upon my return it has started with the light strikes. I used my extensive hillbilly engineering-spraying the bolt assembly in & out with a heavy coat of WD-40, but it did not fix the problem-imagine that!

Any tips before I pay for shipping?

Thanks in advance,
Rob
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Old 04-12-2011, 04:52 PM
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Thanks for your service and welcome home.

All I can think of is the striker spring has weakened. You didn't possibly leave it cocked for that year? Hopefully the fix is a new spring.
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Old 04-12-2011, 04:59 PM
Camster

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Yes,thank you for your service.
Assuming that you disassembled the bolt and cleaned the components,just not the spray treatment?
My thought is that something gummed up while it sat,and it's a little sluggish.
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Old 04-12-2011, 06:46 PM
AlexClarke
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While WD-40 should do the trick...

... it also will gum up all by itself. You'd do better to use a very thin penetrating oil, like Kroil. Has just enough lubricating ability and doesn't gum up the works.

Alex
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Old 04-12-2011, 07:47 PM
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Definetly flush the WD-40 out of the bolt it will gum up and slow the striking effect. Wd-40 as a lubricant is not a good thing.

You do not need any lubricant inside the bolt inself, a little grease on the locking lugs and cocking ramp are fine but that is all you need.

drover
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Old 04-13-2011, 07:28 AM
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Welcome home Brother, nephew just returned with the 101st (96th ASB Roadrunners) last month, Also THANKS for your service....I will add that I too agree with the cleaning of the WD-40..........
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Old 04-15-2011, 11:29 PM
boatammo
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Blow the snot out of it with carb cleaner and lube lightly with a quality product
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Old 04-16-2011, 06:59 PM
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Lite Strikes

My Cooper LVT had the same problem. Turned out that the striker was a shade too short. Sent the bolt to Cooper, who changed out the striker. Problem resolved.

Art
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Old 05-02-2011, 07:56 PM
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Same thing on my LVT. Some misfires and sent the bolt assy back to Cooper and now 100%. Must say the best customer service experiance I've had within the firearm industry hands down. Purchased the rifle second hand and probably why it was for sale in the first place.
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Old 05-02-2011, 08:37 PM
HEAD0001
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I use a cleaner that is similar to brake cleaner. It is known and used for cleaning electrical boards. It will not residue nor gum up. I use it with either a can of air, or just a regular high pressure air hose to blow off the cleaner and gunk. Give it a real good cleaning first.

My advice is to leave the WD-40 on the shelf. No way I am putting any of that stuff in my Cooper!! Tom.

Last edited by HEAD0001; 05-02-2011 at 11:26 PM.
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Old 05-02-2011, 10:12 PM
SlyOneMrGrinch
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Taken down & cleaned well with brake cleaner, put back together-problem solved! No more WD40!
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Old 05-02-2011, 10:30 PM
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Great to hear that.....I too learned the hardway about wd40
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Old 05-02-2011, 10:50 PM
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Quote:
I used my extensive hillbilly engineering-spraying the bolt assembly in & out with a heavy coat of WD-40, but it did not fix the problem-imagine that!
Do not let WD 40 anywhere near your gun, it is nothing but a cause of future problems.
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