I was at the gun shop a couple of days ago and was looking at two 1911 compacts with bushingless barrels. One was a kimber with a "bull" barrel and the other was a Wilson Combat with a "Tapered Cone" barrel. Both these barrels are 4" bushingless. What's the story on barrels like these? Are they accurate? How about durability? Will the fit ware out sooner then a standard 5" barrel with a bushing? Any other info.? Thanks. Stay Safe, Sam