Hey Everyone, I am interested in getting my .220 Swift rechambered into one of the .220 Swift Improved variaties. I just have a few questions about them. Which is the best Improved version of the .220 Swift? Or is there just the one? What kind of velocities can you generally expect using a 55 grn bullet and up? What barrel length is optimum with an Improved version? Generally speaking, what kind of barrel life can you reasonably expect? Keeping in mind proper break-in techniques and a regular cleaning schedule and keeping the heat to a minimum. What kind of accuracy can you generally expect? About how much more powder does the Improved version use over the standard .220? Brass life compared to the standard? Is there a noticable amount of reciol increase? I am not afraid of recoil, just wondering about a muzzle break. Thanks for any info on this!