Yea, thats a good point. If only BBs would just fly like a bullet. So far ive only shot at birds, but Ill try that.
Why? What did the birds do to you? Did you eat them? Did they shoot you first?
But yeah, airsoft and real steel are extremely different. They both have triggers and barrels. That's really about as far as it goes. lol.
And, I didn't necessarily mean a tightbore. A crap tightbore would be outperformed by a decent quality loosebore any day. That being said, I run 6.03's and 6.01's in my guns. A High quality tightbore such as a prometheus or DBC (I have also had really good luck with the airsoftgi brand 6.01's) will give you the best performance once everything else is working really well. But unless your barrel is warped or burred, a better hopup bucking and nub, or maybe a better hopup unit, along with making sure all your airseal components are in good shape will have a greater effect than ANY barrel upgrade.
Also, as far as user practice, what Chip said is spot on. Of course, once you have those basics down, you should also practice shooting offhand, crouched, prone, crouch-running, while using a radio, pistol accuracy during a spring, etc. Basically any possible scenario you can ever think about, and then a few more.
What none of these emulate is a "high pressure environment" like you would see in a game. I put those in quotes because from my understanding (Not experience), real combat is significantly more stressful. But if you have the drills drilled into your brain, then it's easier to emulate them through muscle memory than it is if you've just done them once or twice.