Whilst quality pellets will normally shoot better than cheapo ones , it depends on each guns barrels , go on e bay and buy plenty of different pellet tester kits ( you get either 25 or 50 of each make) your gun what ever it is will usually have a pellet it prefers/shoots really well with and the difference between a well suited make and poorly suited pellet/ make can make a huge difference to accuracy. Buy a load of tester packs and find the best one for your gun.