What is causing this? |
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philtno
Senior Member Joined: May 04 2019 Location: Blenheim, NZ Status: Offline Points: 261 |
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Posted: January 19 2020 at 11:57am |
Hi, Went shooting yesterday and got this (see photos). These rounds were actually made of saved HXP powder and projectiles. I didn't have any issue with the other rounds I reloaded...just 3 or 4 of these HXP saved powder. Now, the original loading was 41 grains...I admit I pushed it to 42gn...could that be the cause? The rifle was dry, no oil left or anything....and that greasy stuff was not smelling anything...gun oil has a very distinctive odour, at least the one I use...so it's shouldn't be that. Have you guys experienced similar cases?? Cheers Philtno
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shiloh
Senior Member Joined: January 08 2019 Location: Ontario, Canada Status: Offline Points: 2369 |
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Oil residue coming out of the deep dark recesses of the breach.
Heat and recoil will release it. Hapens to me on occation regardless as to how clean and dry you may got it. |
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Lead from the front; eliminate all obstacles...
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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You've got me. I've never seen anything like it. Is it solid is, like grease or liquid like oil? My only though, & probably not too helpful is something got in through the gas vent hole somehow? That's the area in which it enters the chamber.
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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philtno
Senior Member Joined: May 04 2019 Location: Blenheim, NZ Status: Offline Points: 261 |
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Hi Shamu,
It's more like oil...at some point it reminds me of the nasty PCB-containing oil you find in transformers...if you see what I mean.
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Shamu
Admin Group Logo Designer / Donating Member Joined: April 25 2007 Location: MD, USA. Status: Offline Points: 17603 |
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Wild guess, was the rifle stored or kept muzzle down at some point recently? The last time I saw anything like that it was old lube grease & cosmo that had been hiding inside the bolt body. When I stood it muzzle down & dripped a little oil in it ran out the firing pin hole into the bore & chamber?
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Goosic
Senior Member Joined: September 12 2017 Location: Phoenix Arizona Status: Offline Points: 8792 |
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I have had something very similar but mine was old gun oil and grease coming from the mating surfaces on the barrel and receiver threads leaching out into the chamber when I got the barrel a tad too hot...
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philtno
Senior Member Joined: May 04 2019 Location: Blenheim, NZ Status: Offline Points: 261 |
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No, I always store them muzzle up in my safe. |
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philtno
Senior Member Joined: May 04 2019 Location: Blenheim, NZ Status: Offline Points: 261 |
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Could maybe be the case with me as well I guess as it was relatively hot yesterday and the table is in full sun....plus I shot something like 80 rounds and those were the last one I shot.... I don't know.....really bizarre
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britrifles
Senior Member Joined: February 03 2018 Location: Atlanta, GA Status: Offline Points: 6539 |
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Looks like bore cleaner/oil with a bit of powder fouling mixed in.
Do you completely clean the chamber each time before you shoot? That's one area I'm very consistent with; I wrap a patch around a chamber brush and apply some brake cleaner; I want the chamber squeaky clean to minimize the bolt thrust. Then clean the chamber (and bore) again with powder solvent after you shoot.
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