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Edmonton<500 (Blackwater 1911 R2 review)
Great review. The only thing I continue to ask myself about these popular (for an obvious reason) KWC guns is why they make them so gutless. 400+ fps on blowbacks is certainly not unheard of.
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DocGadget wrote
Because they would need longer barrels and people would complain about how little shots they're getting out of their guns.
Thanks! I really like the Blackwater 1911 more and more.
Doc is absolutely correct on the barrel length. It is the King for all CO2 pistols. Increase it to say 19 inches and a BB pistol would shoot around 700-800fps. Some time ago Tom Gaylord, a.k.a. B.B. Pelletier made testing and came to the conclusion that increasing the barrel length of a CO2 pistol beyond 19 inches is not beneficial. So it is kind of a length limit.
However, why would anyone need in a BB blowback pistol muzzle velocity even near 500fps being unhappy with the 320-350fps? Even with 500fps a BB pistol is just a paper puncher or a tin can/glass bottle killer. Nothing else.
The BB CO2 blowback pistols like the Blackwater, TW1911, Sig Sauer P226 and GSG 92 manufactured by KWC are 1:1 converted from the airsoft counterparts shooting 6 mm plastic BBs (balls). KWC just changes an inner brass barrel from 6 to 4.5mm diameter. Furthermore, these pistols in airsoft and airgun versions function exactly as the real firearms which they replicate. They have full size magazines, full blowback (the slide moves the same distance as in a firearm), the chamber stays open after the last shot and they are fully field strippable. The major advantage of these pistols is that they simulate 1:1 the action of a firearm. This way they are excellent training tools for shooting in a basement or somewhere outdoor without frequent visits to the dedicated shooting range and wasting expensive ammo for people who owns firearms. Their blowback feels on par with a .22LR pistol or even stronger. In these pistols a large amount of CO2 energy goes for a blowback action. Sure it is easy to re-design valves to release more CO2 to increase a muzzle velocity and reduce the number of shots to say 10. But then as Doc correctly noticed a lot of people would complain.
I’d also add that the second group of BB blowback pistols represented by the Umarex Walther P38 is designed from a square one rather than converted from airsoft blowback pistols. They have higher muzzle velocities (400+fps) but their blowback action is only partial (the slide moves at a short distance) and much weaker. But the chamber stays open after the last shot. Also they have stick type magazines and a BB is chambered with each trigger pull.
The third group is blowback-revolvers like the Umarex Beretta PX4Storm and Desert Eagle and the Gamo PT-25&85. Their revolving ammo clips are operated by the trigger pull, they exhibit pretty strong blowback and the slide cocks the hammer. The chamber does not stay open after the last shot which is impossible to achieve with a revolving clip. They have muzzle velocities 350-400fps with 7gr pellets. But the number of good shots is usually only 30-40 per cartridge.