Is Crosman American Classic really 495fps?

[PECHENEG]

I could only get 460fps with 7.4g .177 shooting down, very close range

 

[KDX]

Apparently it is not really 495fps.

 

[mbogo3]

Manufacturers mislead with velocity to sell guns.

 

[Grizzlypeg]

It must be very hard for a manufacturer to hit the 495 mark. I would think out of an abundance of caution, they would leave some margin for error.

 

[hawkrider]

.

 

[GerardSamija]

Crosman typically uses a sub-standard pellet weight for velocity testing, whether to safely stay within Canadian requirements or to inflate their numbers for advertising. Or both. Seems likely the 490fps would be with a non-lead pellet, either a plastic/steel sabot high velocity type weighing around 4.5gr or a similar weight of non-lead diabolo pellet. Same applies to Benjamin and others, where you can see break barrel air rifles advertised at close to or even over the speed of sound. Pop in a normal pellet and the numbers drop by 25% or more.

 

[Pocisk]

GS nailed it, try something like the Gamo PBA Platinum.

 

[Crazy Cory]

Try a very light application of oil to the inside of the pellet rear.
Then test again.

 

[tharkhold]

They probably test these in a vacuum of space, shooting from the ISS... then advertise those numbers.

Same thing with my car... speedo goes all the way to 300kph... but yeah, no.

 

[mbogo3]

Or an American value without the bleedhole. and install a velocity adjuster.Set at 495 with the 8gr pellet.

 

[Clotho]

Altitude can make a difference as well. I was disappointed with my new gun's performance until I adjusted it for altitude. Then I found it to be bang on. I'm at about 3500 feet which is about 12% less air pressure than sea level.

http://www.uigi.com/Atmos_pressure.html