Good Saturday Morning, community! I have an interesting problem to share and I hope you will have some teories for it. I have TM VSR10, AA Hop up chamber, 509mm barrel from Well MB03, where I've cut metal bridge on hop up window to make it fir to Maple Leaf Autobot 80 deg bucking. In August 2017- September-2017 I've played with rifle on few games, made decently accurate shoots on 90-100 meters and was very happy with the rifle. Then in Autums and Winter I didn't use VSR and played with assault rifles and DMRs, as players start to wear heavy jackets and stop feeling hits from the long distances. Now in Spring I took my lovely VSR and... It bloody overhops like hell! Even with zero hop! I experienced it when air temperature was -2, I thought maybe rubber was squeezed due to cold. I used 0,46 BBs from Novritsch, so I didn't have opportunity to drastically increase weight of the BB to compensate overhop at zero hop up setting. I used at home 75deg decepticon (literally not used almost) but it again overhops. I used same rubber with stock barrel and hop up chamber - it does not overhop, but accuracy is awful. Finally I put Maple �� Monster 70 deg to AA chamber and on modified Well MB03 barrel today, loots like it does not over hop that much, I've ordered new Autobot rubbers, but hell I have no idea WHY perfectly shooting before rifle after being stored during winter start to give such surprises. I only thought, that maybe I've put a bit of silicone oil on top of rubber and somehow rubber grown in dimensions, but I don't recall I ever did spray on almost new decepticon 75deg rubber, which did overhop as well. Barrel is clean, I use same �� omega nub all the time.
... and issue is not over. I received new Autobot rubbers and start to try it with different barrels: stock VSR, WellMB03, AEG barrel which I've modified for VSR - with some rubbers there is no SIGNIFICANT overhop, but my feeling is, that it will start to overhop if I use BBs lighter, than 0.40g. When I put rubber on the barrel - it looks to me OK and I don't see that nub drastically exposed to the barrel window. When I put Barrel+rubber to AA chamber - nub slightly pushed to barrel window, but really slightly, when I put it all together to Outerbarrel - nub get's to the barrel window more.
I was thinking to buy ML Crazy Jet barrel, but now I'm concerned, maybe it is issue with AA chamber itself e.g. it got worn (while I don't see any evidences of it) or maybe outer barrel got damaged? How to check it I don't know at the first sight it does not look like this.
Another strange thing - I never noticed before on 80deg Autobot, that ML rubber has so much significant Warm Up effect. Literally when I used Diamond 70deg after I set Hop up with not frequent shots and then in the game I have to shoot several times in a row BB just flies to the sky. Hell - maybe this is as well a signal, that something is wrong with parts in my VSR?
Really hope to get some valuable advice here.
