For the ported/comp guys

Shot a uspsa match with my ported echelon and noticed lead build up in the rifling from the ports forward. Thought it was weird because I've put about 100-200 rounds through it with nothing noticeable. Dug a little deeper and was told blazer basically had no jacket and the box says not to use with ported guns. I guess knowledge is power and reading is also power lol But I'm a visual learner so I chopped some ammo for science. Donations are accepted as I may not financially recover from this one lol