sharp, trust me , bore butter is fine for patch lube and lubing bore for rb /conical. they only problem i had with it is in winter down below freezing.i use hoppes blackpowder patch lube now in WINTER.just dont store gun with it but i did for 35 years and no problems. i use sheath now.if you clean gun after you come home, no way that bore butter is going to build up.its only if you dont clean gun and that stuff dries and builds up ,then apply more on top.