The Remington Airmaster is rated at 725 FPS (Feet Per Second). The Crosman 760 Powermaster is rated at 595 FPS and the 760P is rated at 600 FPS. 10 pumps each.
Remington 870 pumps max out at $250
No more that 10 pumps! Per the Instructions.
The Crosman Owners Manual states to NEVER pump the pistol more than 10 time and at least 2 times to fire a BB out of the barrel.
Someone at the Remington Society of America should be able to help.
3 to 10 pumps. More than 10 pumps will damage the seals.
10 pumps = 580 FPS. made in 3 variations between 1968-1978
Benjamin ( who is owned by Crosman air gun) recommends 10 pumps. Over pumping may damage the rifle. You can still get the owners manual for this rifle for free. Go to the Crosman link below and click on "Download a manual" at the bottom of the web page, then click on Benjamin and locate your rifle.
To answer this question you would have to go back to Crosman and ask them directly. See the link below.
velocity diagram indicate the effect of vane angle, effect of jet angle on impeller speed
CROSMAN 1400: 10 pumps = 580 FPS. made in 3 variations between 1968-1978
The Crosman 66 Powermaster air rifle typically has a velocity of around 625 feet per second (fps) when using standard .177 caliber pellets. However, the fps can vary depending on factors such as pellet weight, barrel condition, and temperature. It is important to refer to the specific model's manual or contact the manufacturer for the most accurate and up-to-date information on the fps of the Crosman 66 Powermaster air rifle.
There are primarily two main types of pumps: positive displacement pumps and dynamic pumps. Positive displacement pumps move fluid by trapping a fixed amount and forcing it into the discharge pipe, while dynamic pumps, such as centrifugal pumps, use rotational energy to draw fluid in and increase its velocity. Within these categories, there are various subtypes, including gear pumps, diaphragm pumps, and screw pumps for positive displacement, and centrifugal and axial flow pumps for dynamic types. The choice of pump depends on the specific application and fluid characteristics.