Quite powerful depending on the distance from a close range it may puncture the skin, but from a distance it is sure to sting.
The marksman model 740 is rated at 425 fps.
I chornoed my kimber 1911 and i got 950 fps with holo point . 45 acp
For a air soft BB gun it's okay not powerful. For a regular BB gun "NO" that is not powerful at all. A Daisy Red Ryder BB rifle will fire around 325 FPS most new pellet Air Rifles will fire at least 1,000 FPS. A really good Air soft rifle will get around 500 FPS.
it depends on how many fps it has
The Eclipse came in 3 different calibers. .177@925 FPS - .22@710 FPS - .25@620 FPS. It was mfg between 1990 & 1996
unmodified Nerf guns might shoot about 30 or 35 fps, but some modified guns and homemade guns could probably get up to about 60 or 70 fps.
425 HP 420 ft lbs
In .22 cal it's rated at 1000 FPS
The Winchester 425 was made around 1974. It fires a .22 cal pellet at 500 FPS. Please state the current condition of the rifle to get an estimate of value. Is it in poor, fair, good, very good or excellent condition?
If you are asking "WHAT" not "Where" is the most powerful under lever .177 air rifle. Then I suggest the "Hatsan Torpedo 150 air rifle." I comes in at around 1250 FPS where as most of the other under levers fire at around 950 to 1000 FPS. However Under levers are not the most powerful air rifles. The PCP (PreCharged Pneumatic) Class of air rifles are the most powerful air rifles. An "Air Force Condor and the Evanix Rainstorm" fires a .177 cal pellet at 1300 FPS.
From what I read on the internet (using Google), that card isn't very powerful. The exact FPS depends on the other specs of your computer such as processor and RAM.
Mfg 1974, 22 cal. fires at 543 FPS. Double pull trigger. 38 inches long, 5 lbs.