Blowback action felt recoil and what it means to shooting practice Part 1
Or as Sir Isaac Newton put it in 1687,
“For every action there is an equal and opposite reaction.”
By Dennis Adler
Four ideal candidates for blowback action CO2 models with just enough felt recoil to give shooters a better sense of the gun firing in addition to slide motion. This small “kick” is less than a .22 target pistol, but enough to give some degree of feedback. Pictured are the Umarex S&W M&P40 (left and moving clockwise), the Tanfoglio Limited Custom, Umarex Beretta 92A1 and ASG CZ-75. All four have similar barrel and slide designs but only the Tanfoglio and M&P40 have barrels and slides that lock and disengage like a cartridge firing pistol.
Newton’s third law of motion is still the best explanation of recoil from a firearm, even though when he postulated his three theories of motion 330 years ago it is unlikely he was thinking about firing a handgun (unless he was familiar with Wheelock pistols), but his theory of action and equal and opposite reaction is perfectly suited to defining recoil in a handgun. Heavy recoil has never been a desirable characteristic, but it comes with the territory. This is, of course, relative to the handgun design and other mitigating circumstances, but Newton’s theory applies in proportion whenever a bullet, BB, or pellet, is fired from a handgun. What are those mitigating circumstances? With handguns it is design. The maximum example would be firing a .500 S&W magnum revolver, the most powerful production revolver in the world (sorry Harry you’ve been replaced), in which the full action of firing the revolver distributes the recoil back through the gun and into the shooter’s body. The weight of the gun itself, barrel length, as well as porting of the barrel to allow gasses to escape upward and reduce muzzle lift, and even grip design are factors to mitigating felt recoil. (Different bullet grain weights, type of gunpowder, and even bullet designs will also have a bearing on recoil). The opposite end of that extreme would be a silenced .22 caliber semi-auto which would exert almost no appreciable recoil. So why are we looking for recoil in a CO2 powered blowback action air pistol?