I'm sold on powder coating bullets for use in my rifles. So far they've worked great in my .22 Hornet, .223 Remington, .300 Blackout, .308 Winchester, and .35 Remington. I would also like to use cast bullets in my two 6.5 Grendels, but one of them is a Black Hole Weaponry barrel with polygonal rifling. As I understand it, cast bullets should not be used in polygonal rifled barrels. Would powder coating rectify/avoid this problem? I've tried contacting BHW, but they haven't responded.