As Jay mentioned barrel length has absolutely NOTHING to do with accuracy, that fabel comes from open sighted guns with short barrels having a shorter sight radius....no effect on a scoped gun. Velocity in a springer with anything over about a 8" barrel shouldn't matter, on a PCP or CO2 gun where you are working with expanding gasses that is a different story. Never really sat around chopping a barrel down an inch at a time to test velocity, but have read numerous accounts of guns having barrels chopped and not losing, and sometimes gaining a few FPS due to less time for barrel friction to act on the projectile. Also have to agree with Jim and say that a shorter barrel in a springer may actually help with accuracy because the pellet may leave before the full recoil is felt. I've never shot a Prosport, but I have shot a TX200, HW97K, and HW77K quite a bit and will say the TX200 has a longer cocking stroke, but it's a bit lighter than the other two. I found none of them hard enough to cock to make a full day of plinking tiring, and I have various issues with shoulders/elbows/wrists that make shooting a heavy springer a tough proposition for me(I'm young, but have had surgeries, tendonitis, arthritis, etc). One thing I like about the HW guns that I don't like about the TX200 is the loading port size, the TX has a true right hand loading port, and if you have large fingers it can be a little fumbley. The HW's have a loading port that goes full side to side. One thing I've heard about the Pro Sport, but have no personal experience with is that the Pro Sport has a wonky cocking handle, in that it can be a bit awkward...but this is hearsay, I have not shot one myself. My personal favorite is the HW97K scoped, and the HW77K with open sights, but you can take that with a grain of salt since I have a TX200 on the way to add to my collection:)