im trying to get to 250feet currently with .3 the bb travels that far. but also at the point of 160-200 feet the bb climbs and with no hopup. what should i do. either A:heavier bbs to make my 160-200 more accurate and no upgrades? B:tight bore. no bb weight change.C: both. D: your suggestion. 100-150ft 4/5 5in group not bad if i say so my self 160-200ft 9/15 6in group this is where the bbs start to really climb and hang to the right. at this range im bringing my sights down and to the left to make a chest shot. would say im aiming three feet to targets right and about knee level to hit center of mass? please help this buggs me when i know the bbs have enough velocity to hit hard still that i can hear they can feel. but just arent staying true for its greatest potential. i have yet to have a bb, fall short.