hay everybody hows it going? i was just writing to see what everybody thinks about the lapco bigshot?

Excellent barrel, definitely my barrel of choice when I need accuracy.

...what distance can i expect from this barrel?

Not nearly as much as the flatline, that's for sure. You'll get the same range as everybody else shooting at the same speed.

can i shoot any paint out of it?

Just about. It's a medium bore barrel so it accepts a nice variety of paint which is great if you have a limited selection.

can it handle ball speeds up to 300fps?

Yes but unless that is the chrono limit at your field then you should not be shooting that fast. The field I play at is 280 fps and I usually shoot at about 270 just to be safe. You start to lose accuracy at higher velocities anyway because even a minor spin will be exaggerated and cause the ball to fly into never never land. You could also injure somebody or crack a lens at those speeds so it's best to stay well under 300 fps (I think lenses are rated for impact at about 315 fps max).