Discussion Starter · #1 ·
Hello my name is Dev, I want to ask you a question. my gun is TM VSR 10 upgraded with Wolverine Bolt and Edgi 6.01 455 mm barrel. my main question is, i set the fps at 470 fps @0.2 bb @130 psi. then i Change my bb to Geoffs .48 bb and Im getting around 379 fps or 3.2 joules or equal to 580 fps in 0.2. So is this a joule creep ? or im getting my chronograph error ?