Your largely correct. Chrome lininga barrel is done primarily as a corrosion resistance measure. It makes the barrel easier to clean, and is less likely to rust. Chrome is also preferable if your going to be out doors for extended periods of time, hunting/camping, etc. For target, Steel bores can be lapped (usually with a set of specially made rounds) and regarding target bores, are usually smoother. Now, the big issue would be, what are you buying the firearm for? If your looking for long range pin point accuracy, and plan to maintain that fine target bore, and assuming you-yourself are capable of shooting with that accuracy, then cool, Steel is great. However, if your "just gonna shoot it", or you know yourself to be an average shot, then i would probably go with a chrome lined bore. All in all, i feel Chrome lined to have many more advantages than disadvantages when compared to Steel bore. You ultimately need to analyse how your using the arm, an if chrome lined or steel will fit your needs better. If you only shoot the arm a little, and it will mostly be indoors, then i don think it'll matter too much, just clean it and oil it after shooting - especially straight steel. Also noteworthy, as we improve our technology, the chrome lined bores are getting better, smoother, and thus gain even more benefits.
- Food for thought.