I use my bioshot .3s and get at least 250-300 feet of effective range with them. You are probably getting those fliers because the hopup arm is moving slightly. I'm trying not to get off topic, but just spend a lot of time tuning it and you can get those bbs going dead straight. And aren't those clear biovals supposed to be much harder than regular bbs and hurt like the real, steel/copper bbs? Anyway, I like to see my bbs when I shoot them but very rarely someone is able to dodge it if they see it by chance. There are pros and cons to being able to see them. Also just keep in mind the ONLY thing fps affects is how fast the bb gets to your target. Heavier bbs will not increase range, no matter what you heard on other forums. They are better for wind and rain, but not for clear, calm days. I think there was an explanation somewhere as to why, but I can't find it. (Couldn't make paragraphs, problems with enter key again.)