Just got my Infamous bolt today, and figured I'd post a quick review in here.
Prior to last week, the only real hands on experience I had with the Axe was a couple years back when I got the chance to play with one for an afternoon before they were officially released to the public. Recently I was looking for an inexpensive gun to use in the offseason and keep for a backup, and judging by all the positive reviews the Axe was getting it seemed like a good buy. I bought a stock Axe and took it into the backyard to run some paint through it. The gun shot okay, but it had a little more kick than I remember.
After reading all the positive reviews of Boss' bolt, I ordered one and installed it in my Axe today. I am using the recommended settings (short spring, dwell at 3ms, pressure at 140psi) and was shooting Draxxus Recsport through a Dye UL with a very good paint-to-barrel match. Simply put, I was blown away by the change. Unfortunately I don't have a chrono to measure my velocity at the moment, but the Axe shot noticeably smoother than it did with the stock bolt. The best way I can describe the change is that the Infamous bolt gave the gun a very short snappy sort of "pop" shot, which reminds me a lot of my old NT. I'd highly recommend this upgrade to anybody with an Axe.
Thanks to Boss for the excellent product, and the quick shipping.