i have a Remington(Crossman/Benjamin) NPSS .22 cal pellet rifle, had it for about 4 years now.(Link)
this type of pellet gun is referred to as a "break barrel rifle". this means that to load and **** the rifle, you pull the barrel down(which charges the gas piston), and load the pellet into the barrel. It's very similar to many old shotgun models(in terms of loading the ammunition).
recently i've noticed a lot of resistance when charging the piston, so i sprayed some common wd40 oil on the rod that's attached to the barrel and piston. This worked to stop the resistance when charging the piston, but apparently too much of it got into the compression chamber because when i fire the rifle, instead of having only compressed air come out, it seems that some oil is pressurized with the air and somehow it burns up in the process, leaving the barrel of the rifle filled with smoke and carbon fouling(similar to an actual firearm). the carbon fouling is getting the rifle in the barrel filthy, which is in turn effecting the accuracy of the rifle, and making it significantly louder. i've tried to dry fire the rifle several hundred times in hopes of expelling all of the oil in the compression chamber, but it is not making a difference.
anyone have some advice? i'd rather not have to clean the barrel everytime i shoot it like it was my ar-15.
You should be using a non-detergent motor oil after every 1000 shots. It'll be marked as such at the auto parts store. Alternatively, you can use a name brand air rifle oil from a shooting supply store...but it'll be exactly the same for less.
Lightly coat the seals where it breaks with a q-tip, and also the mainspring.
Fire that ***** until oil stops coming out. Then oil with the aforementioned non-detergent motor oil.
Edit- if you really want to make sure it'll be ok... you should be able to find a dis-assembly guide on the manufacturer's website.
[Edited by Dhampy, 5/13/2013 7:04:28 PM]
My advice would be if you are that way inclined is to take the rifle to bits its pretty easy on that model also clean all the WD40 off, renew the piston washer a thin coat of recommended oil and bingo its as good as new.
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