So, I recently purchased a well mb05 off of craigslist, and I've had fun disassembling and gaining a general understanding of the parts by reading online. From my reading, I came to the conclusion that a tightbore barrel along with a new hop up unit would go a long way in improving the overall accuracy of the gun.
Previous to upgrading it, it chrono'd in at around 450 fps... I'm not sure what it will be at when I add the parts, but I'm hoping that someone would be able to recommend a preferred weight of bio ammo along with where I should purchase it from. I've been able to find higher weights of non bio ammo, but it doesn't seem to be legal on most fields.
Thanks,
Jawnson