Just picked one up. 1450 fps. .177. Nice weight and very comfortable.

 

I thought it would be silent. I was wrong. Sounds and feels just like a 22lr. Bought it for summer fun in the back yard. A little too loud. Anybody have suggestions on a quiet yet powerful full size air rifle?

Anything with that many fps is going to be loud I'd get a less powerful subsonic model maybe a 22 pellet gun which will give you less velocity but more power

 

 

Sent from my hidden under ground bunker between Taco Bell and the dry cleaner

I have a 750 pumpmaster. Nice a quiet and turns soup cans into Swiss but was looking for a rifle for the adults to play with. I enjoy the fact that this one has a one charge barrel.

I'm guessing that a normal or heavy weight pellet won't help much in this case since the gun is so powerful.  Sounds like you want a break barrel air rifle that shoots normal weight pellets (approx. 7 grains) at around 800-1000 fps max.  Keep in mind that if you use lightweight pellets (such as Raptor PBA) in a 1000 fps air rifle you will still get that loud "crack" as if you shot a bullet also because of the increase in velocity to approx.1200 fps. There are many .177 cal break barrel rifles that shoot in the 800-1000 fps range with normal weight pellets (gamo has quite a few).  Also Lowslowmiata brought up an excellent point in that the majority of .22 cal break barrel air rifles won't fire their pellets supersonic (due to their extra mass) either .  I have several air rifles, two of which are gamo's (Shadow and CFX) and with normal weight pellets these are plenty powerful without the loud cracking noise.  

well known fact among airgun shooters is that pellets, when pushed supersonic, simply are not accurate. Don't get hung up on speed. And if your pushing a pellet that hard there's a good chance that the piston seal is slamming into the end of the compression chamber, not at all good for the seal.  PBA pellets are junk, pure and simple.

 

 A good accurate brake barrel should easily hold 3/8" groups at 25 yds (dime size) for 10 shots. An 850fps pellet will stop rabbits and squirrels easily out to 45yds if you do your part and shoot well.

Supersonic ammo makes a pretty loud crack. .223, for example, is about as loud as a .22. .22 supersonic (which varies greatly with barrel length) sounds at least like a loud BB gun, but more "crack" than "poof".

So after about 5 shots, it's seems to have quieted down quite a bit. This normal?

I have a crossman storm xt that is really quite. Runs great and extremely accurate

So after about 5 shots, it's seems to have quieted down quite a bit. This normal?

yes.  Spring/piston air rifles do need a "settling down" period.  Sounds as if you had excess lubricant in front of the piston seal and your gun was "dieseling" (lubricant was igniting from compression) a bit.  This sometimes does happen with new spring/piston magnum air rifles primarily from when it was assembled at the factory.  After a couple of "hot" shots it should be good to go.  If it continues for too many shots, it can eventually damage your gun.  Get rid of the PBA ammo as BillC mentioned.  Get yourself several different brands of normal weight pellets and see which your gun likes best.  (I had a much longer explanation written but for some reason it did not post).   Just as well, LOL.

Awesome! The sound is much more acceptable now. Seriously sounded like .22's firing out of there for a while. I may pick up a second air rifle and will look into that cross man storm xt.