paint ball question

[VorteX]

i need a lil help im stuck on withc bolt to buy for my piranha sts. i have an 13in armson stealth barrel and a 32° expnaion chamber running c02, and im stuck on whitch to buy a shocktech bolt of the venturi bolt, ne one who has either one of these bolts and would prefer it could u tell me why and te + and the - of the bolts? thanxs
*edit*
here is a pic of my gun before the expansion chamber and the stealth barrel
http://www.picturetrail.com/gallery/view?p=999&gid=1696921&uid=924787&members=1
*edit*

 

[fatmanterror]

as one who once used a spyder and pirahna[now i have an autoc0ck3rer i built up] id say the bolts dont make a noticable difference in accuracy especially if ur usin co2, dont waste ur money ull hardly notice a difference:laff: