I always clean a brand new barrel because a lot of new guns have anti corrosion gunk inside to stop corrosion while shipped/stored. Only cean after that if accuracy drops off
With a new rifle or pistol I’ll pull through between 10-20 times before the bore is clean, amazing what comes out- then every 200 pellets - Napier pull through and power oil too! You need three Napier patches for .22 and two for .177 to do a good job!
Pull the pull through down about an inch then put a bit of spray down the barrel then pull you will get no gunge shit at the business end of the barrel so it won't matter if you use cheap wd 40. Looks like it did the job
Hi Shane, cleaning barrels is a mute point, Matt Manning off the airgun show says he's never cleaned the barrels on his guns, and they say it takes at least a couple of hundred pellets to re lead them, I must admit I have never cleaned My barrels, and as far as I'm aware have had no problems.
I always use a single shot tray when testing pellets, because I've found that sometimes the gun will love a pellet that the magazine doesn't. Both my Myth and Lyra definitely shoot more consistently with the single shot tray than with the magazines, which are a bit pellet fussy. I'm pretty sure the mags are the same as the NP02's. I use an aftermarket single shot swing loader that is cheap and very easy in use.
Try the h&n field target pellets, Kral allegedly use them as a test pellet in the factory. I used to have the same gun and found the head size of the pellet(4.51) made a big difference. Ended up getting penny sized groups at 35yrds with qys streamlined heavy pellets in 4.49. Good luck with the testing.
you want to lead a barrel, it improves the seal on pellet. I'd try different pellet brands to improve accuracy, and then if necessary weigh pellets. I get less than 4 fps spread in 10 shots, with a chrono, with unwieghed pellets that suit my rifle.
hi Shane try trying it without the silencer and with a different silencer as some pellets/rifles are silencer fussy . i know it sounds silly but its true . i would imagine you should be getting clover lea groups without a silencer and a pellet it likes then take it from there . i have riffles that wont entertain dome of my other riffles silencers . you also need to keep your silencers clean , then theres' a case of is the pellet clipping the silencer. in my experience the longer the silencer the more risk of clipping occurs due to tolerances in the threads and silencer adaptor fit , i loose fitting adaptor is a no-no if it slops around when the grub screws are loose it really needs packing with foil or tape equally around the whole barrel until the adaptor just slides on without any wobble, which should in theory at least true-up the adaptor which should intern true up the silencer or make it more central which improves consistency/accuracy .. food for thought Shane .
My NP02 sub 12 22cal loves Polymag shorts for ratting up to 25 yds, group opens up after that but if i use JSB then they are good to 30 yds. Barrel cleaned when new then haven't had to clean it after at least 2000 shots
clean barrel then shoot kral .177 31 yards
shaneweightman
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cleaning the barrel on my np02 and shooting 31 yards