Howzit okes,My Sumatra is the Carbine version in .20 which I imported from the USA. It's one very accurate air rifle and for general hunting use it like Accupells. It shoots the heavyweight Eun Jins very well too, even on full power. Using Accupells I turn the power wheel down from Max 'red' to the next 'red' down - one complete turn. From a fill of 3000 psi this gives me 30 very consistent shots without adjusting the power wheel. The pic attached shows typical results, 3 shots at 35 yards. The orange circular patch is 3/4 inch in diameter. It's good to compare notes with other Sumatra owners.
Hey Manny,well mine's been crazy accurate and so far I'm tickled with it.She likes the H&N Barracuda's and the Eunjin 35.8 Hunting pellets as well.I've been really impressed with it and for that I'm happy, as this is my first PCP.I did run the weedeater line through mine with goo gone as they say they have some type of oil in there to keep it so no corrosion gets in there while it's stored before the sale.My barrel was oily inside the first patch,but only need 3 more dry ones and was wicked shiny after cleaning it.Since the first shot she hasn't changed so far.I haven't been charging her the last few times up to 3000 psi,but when I do use over 2500 she's still the same (At least a up to 32yards).I Hope you get her sorted out real soon as I'm still having a hard job not shooting this thing every other hour,he he! Hang in there,,she may just need a little goo gone and a break in and you'll be taking game like crazy,lol. Happy Shooting. T