I have one in ,303 British that is dark between the lands but strong rifling. It shoots .777 for 3 shots at 100 yards with mild 37gr RE#15 /174 SP Hornady. I went at the bore the other day with Sweets 7.62 and was a full hour taking out blue patches.There seems to be no end to it.Is there a better way and how long can I leave this @##$#@## in the bore? Who knows what was fired out of it by previous owners? Long 28" pipe to boot.




















































