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Old 29th February 2016, 06:08 PM
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Default So, thats why my mpr has been so pants lately!

Rust on the hammer rail! The cause of its low power and inconsistency I suspect.
fps was down to about 720 from its normal 777.

So, striped and re polished. The thing is, this makes me wonder if an un-lubed rail is really a good idea after all.

Thoughts?
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Old 29th February 2016, 07:12 PM
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Quote:
Originally Posted by matt goodson View Post
Rust on the hammer rail! The cause of its low power and inconsistency I suspect.
fps was down to about 720 from its normal 777.

So, striped and re polished. The thing is, this makes me wonder if an un-lubed rail is really a good idea after all.

Thoughts?
Keeping it dry and serviced also helps, if it got that wet you mustve got some down the barrel as those loading ports are like bloody guttering , I, d give it a damn good pull through too Matty
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Old 29th February 2016, 07:25 PM
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By dry hammer rail I was told put some 3 in 1 on and then wipe off gives some rust protection but no gunk to foul up.

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Old 29th February 2016, 08:02 PM
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I always thought the hammer rail was stainless steel? The rust has probably come from the inside of the hammer? A dry lube is certainly best as oil will create inconsistency, oiled and wiped off as Andy says is probably best.
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Old 1st March 2016, 10:17 AM
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Thanks all!

I'll give it a pull through, good idea.

Simon, the rust was on the rail and wouldnt come off until I put some metal polish on it. I'll give some thought to a light coat of oil.
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Old 1st March 2016, 10:31 AM
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Quote:
Originally Posted by matt goodson View Post
Thanks all!

I'll give it a pull through, good idea.

Simon, the rust was on the rail and wouldnt come off until I put some metal polish on it. I'll give some thought to a light coat of oil.
Don't put any oil on the rail as it will just burn/dry on & cause problems, make sure you clean out the inside of the hammer as I also though the rail was stainless so any rust is likely to have come from the hammer.
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Old 1st March 2016, 11:11 AM
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I've cleaned the inside of the hammer already, thanks Pete
Well, I cant be 100% sure where the corrosion came from, but its gone now! I think I'll leave it dry, since thats the way it is at moment.
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Old 1st March 2016, 03:51 PM
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I always thought the hammer rail was stainless steel? The rust has probably come from the inside of the hammer? A dry lube is certainly best as oil will create inconsistency, oiled and wiped off as Andy says is probably best.
This. The rail is stainless and the corrosion comes from the inside of the striker, falls onto the rail and mixes with the factory grease which then dries and forms the brown caked-on crap you describe.

FWIW I polish the rail, clean the bearings out with some blue roll and oil, take any corrosion off the striker with 0000 wire wool and oil then lightly coat the striker with oil to prevent further corrosion.

You're certainly fine running the striker dry, or as Simon suggests a dry lube if you must put something on it!
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Old 1st March 2016, 03:56 PM
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I've cleaned the inside of the hammer already, thanks Pete
Well, I cant be 100% sure where the corrosion came from, but its gone now! I think I'll leave it dry, since thats the way it is at moment.
You can definitely use Breakfree CLP, a firearms lube/ corrosion inhibitor Matt. Wipe a drop or two over, let set into the surface a bit and then polish off so it is dry again, enough settles into the pores to help keep it clean and lubed and at least some corrison protection, it's not like 3 in 1 mate
A bit like Dri Slide in the comp tubes, get it down into the surface structure.
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Old 2nd March 2016, 08:45 PM
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Any chance someone could post the part number from the J Rottery 400/500 spares diagram. I am not familiar with the term striker rail and want to check that mine is ok.

Thanks
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