Accuracy is the name of the game and repeatability, sight picture, etc then Ken Lights are the way to go. Yeah they cost as much as a used barrel but there is a reason. Silhouetters use them almost exclusively on every rig I have ever seen. In fact I have a 7 TCU with them on it, dies, brass etc for 225, 14" barrel in good condition, plus at least 100 rounds of bullets. I have 300 rounds of loaded ammo, but they like to charge an arm and a leg to ship that stuff.