The following is from personal experience I’m not a tuner I’ve just owned too many Airguns . I have a really good friend that recently bought his first regulated gun. The gun is really accurate however he’s not been very happy with it. The gun is pellet on pellet on paper but the numbers were bothering him. Curiosity got me to ask some questions. Come to find out that his gun only has a 25 foot spread which to me is excellent but I’ve owned many regulated guns and know what to expect. Honestly I’m ok with a 40 foot spread because the distances I shoot 40 spread makes no difference. My buddy has been watching YouTube and comparing doctored extreme spreads of 5 feet. I’m not saying it’s impossible but most guns unless you spend a week on and have the capability of multiple dials and knobs will never give you 5 foot spread. They won’t tell you that they sorted and weighed pellets or any of the details. All the YouTube world is trying to do is sell a gun. Also variables in the chronograph makes a huge difference as well. My fx chronograph isn’t very consistent but it’s good enough. Nate Chronographs on the other hand have proven very consistent. Other things such as humidity, pellet consistency, temperature, air pressure all play a big role. The point is don’t sweat the #s. Shoot at paper and see the results. You’ll know when your regulator is bad believe me it’s obvious.