Is it the soft bucking idea that you are unsure of?Interesting guide. Somethings go against other opinions I have read but always interesting to read another view.
Many people do not agree with the idea of soft buckings on a high FPS gun. If done right though, and the person is careful on how much hopup they apply, the gun should be more accurate and the bcking can last a long time. Not as long as a hard bucking but still a very long time. My 55 degree bucking has lasted me about 10,000 shots and it is still going strong.
The less hopup the better because the hopup is pushing the bb downwards. This means that there is 2 different forces. One from the compressed air pushing the bb forward and the other force pushing the bb down. Down and forward do not go well togeather to make it go straight.
Like some of the others have mentioned, I should try the Long Range Barrel mod. This is in effect a form of hopup and it does not apply a downforce. It's mamking the bb travel along the top of the barrel to which in turn creates some back spin.