vulcan
if you are shooting as a guest on private land and the noise a .22 or centrefire rifle makes is a concern then consider using a suppressor. there is no stigma attached to using them and they are as common as heck these days. personaly i dont care much for them as they add weight and usually ruin the balance of a rifle. besides, i shoot on my own property and i don't mind the muzzle blast anyhow, and if others in the vicinity do then that's their problem.
if you buy a .22 and think that you may want to use a suppressor at some stage it's usually a good idea to buy one with the muzzle already threaded (many new .22's are) to take an inexspensive muzzle can suppressor which are resonably effective with sub sonic ammo. or you could really dig in to your piggy bank and get the fully suppressed savage .22 . with the reputation that savage have i would think it would be very accurate as well as being very quite.. probably make less noise than your air rifle when using subsonic ammo.

Features: Barrel machined and Ported to be just over minimum legal length. Exterior finish Black Milspec.Stock - Wood Blue - monte carlo style. Suppressor Tube 304L Seamless Stainless. Internal components 100% Stainless. 10 Shot Magazine. Supplied with 4 x 32 Scope and Simmons Rings
as toad already mentioned the savage weather warrier is a good rifle and would be my pick for value for money and quality in a centrefire bolt action rifle. and there is a fully suppressed version of it as well.

"Barrel shortened approx 18''. FULL Overbarrel suppressor. 304L Seamless Stainless Steel. Integral muzzle break. 304 L Stainless Asymmetrically formed baffles. Available in 7mm08, 223 and 308"
http://www.sportwaysgunshed.co.nz/index.php