I've been using Bisley Practise in my CP99, and found them pretty accurate, any faults I've found to be from the bloke squeezing the trigger, I have used Hobbies, but Ifound them to be a slightly loose fit, and they would often fall out when lifting the mags out of my speedloader. I always wash and lube my pellets whether for pistol or rifle and lubricate with beeswax furniture polish spray. In my hunting rifles, (FAC) I only use Accupells.