You don't need a long barrel for long range shooting, or even a large caliber handgun unless you need maximum velocities to put more energy on the target. There are a lot of guys shooting 200 yards gongs with short barrels. Longer barrels would flatten out your trajectory a bit. If you need more impact energy, use a bigger gun. Google "long range handgun gong shooting", and watch people hitting gongs at 200+ yards with all sorts of handguns. Handguns silhouette shooters do it all the time. It just takes practice. Shoot whatever you want. Personally, I found .357 mag Contenders lacking in accuracy at long range, but I've since discovered that there are different generations of 357 mag Contender barrels, and not all of them are desirable for long range. There are some differences in throating, and bore dimensions that didn't work out as well as was expected. You can check out Mike Bellms website for more information, if a Contender is what you're hoping for. It was probably just my luck that the two I had were likely from less successful production runs. If I were going to shoot 200 yards with a .357, I'd scout around for the longest barrelled 686 S&W I could find that had a replaceable front sight. Then I'd replace the front & rear sights with something like Bowens "Rough Country" sights. A good trigger job, and some tuning, then I'd turn my attention to the ammo I'd build for the job. All matched cases, brass, not nickel, trimmed to match. Match primers (or perhaps not), and the best bullets I could find. Honestly, I'd probably cast them myself, just for the extra quality control. Probably an LBT 185 gr FN design, with a gascheck. From there, it's load development and practice.