All my barrels are factory and all shoot very well. I have a 20 inch .22 K Hornet, 23 inch 7-30 Waters, and 23 inch .30-30 AI carbine barrels. I also have a 10 inch .22 rf, 10 inch .30 Herrett, 10 inch .22 Hornet, and 14 inch 7 mm TCU. All factory and all accurate.