I get occasional misfires using Hornady factory ammuniton. Knight KP1 using 325 grain FTX bullet with their brass which is .060 shorter than standard to function through lever guns. Knight warranty replaced the trigger assembly last week, two stage with a crisp 2.5 lb pull, but told me I'm likely to still have problems with the Hornady brass because of variations in rim thickness. Question: Who makes the best brass with the thickest rims?