My dad just bought a 350 magnum in .22 a couple months ago, and it seems pretty decent. For the first 1000 shots or so it was hell, printing 3 inch groups at 10 yards. After the break in (necessary on all spring rifles) it shoots great. Runnign at about 850fps with 16.1 gr predator polymags, shooting around 3 inch 5 shot groups at 70 yards.