HATSAN 135 VORTEX QE .25 CALIBERTESTING PELLETS: "JSB Match Diabolo Exact King MKII Heavy .25 Cal, 33.95 Grains". These were decently accurate out of this gun, at 20 yards it gave me 5-shot groups between 0.5"- 1", HOWEVER I consistently had 1 flyer pretty much every group. This flyer would make the groups grow to 1.3"- 1.5" groups, whenever I had a flyer id just shoot another shot meaning I shot 6 pellets total resulting in 5 shots grouped together and the 1 flyer out to the side somewhere. After testing accuracy I tested velocity with my chronograph. These pellets had an average velocity of 610.8 FPS giving me 28.13 FPE. This is awesome power for hunting! HOWEVER due to the consistent flyers I will not be using these for hunting nor will I be purchasing the pellets again, Although to be honest 1.5" groups would probably be perfectly fine for anything you would hunt with these.- OVERALL QUALITY SUMMARY: This rifle is definitely VERY ACCURATE. It is long and it is heavy. Its made quite well with wood & german steel (not Chinese steel). The rifle sights are decent, they are plastic but they adjust well and are easy to achieve great accuracy with. The cocking effort is HEAVY, at first I had to set the butt on the ground and use both hands while standing up to cock it, it has gotten a little easier but you might struggle at first. This does NOT take anything away from the rifle though. The scope mount is nice, really glad they include a weaver rail along with the 11mm rail, USE THE WEAVER RAIL NOT THE 11MM. The recoil on this rifle is not that bad, you notice it but its not as big as some people have made it out to be. I have put a vortex crossfire II 3-9x50 and it has been fine so far. by the way there is no scope or rings included with this rifle as the description says.- ACCURACY: The rifle itself does show its capable of excellent accuracy, this depends more on your pellets, scope and how its mounted and most of all YOU. I will be testing more pellets with this soon.- NOISE LEVEL: This is pretty quiet as its not breaking the sound barrier however it will be heard. The loudest part is when those pellets hit the target. I shot 2x4 and wood backstops and when it hits its hitting very hard and it will be heard. Most likely wont bother neighbors but if they are outside they will know about it.- CONCLUSION: If you want to see more testing, hit the "helpful" button and leave me a comment so I know. The next pellets I will be testing are JSB Match Diabolo Exact King .25 Cal, 25.39 Grains, H&N Baracuda Hunter .25 Cal, 27.47 Grains, H&N Field Target Trophy Domed .25 Caliber 19.91 Grains, H&N Crow Magnum .25 Cal, 26.23 Grains. besides that, this rifle is very well made, wood & steel used is high quality, its very powerful, very accurate, and this is something you would definitely be happy with. Check out my review on the gamo raptor whisper .22 if you are interested in that gun. thanks for reading.