Thank you Zulu, what I find amazing is how close my cannon is following the design of DD's Long Cecil with out even trying . Joe I run the 1-3/4 in drill at 110 RPM and the 2-1/16 in drill at 70 RPM , they are both HSS and seem to like that setup. The drills chatter a little starting out but stop when in the hole a bit . I use a little cutting oil from a oil can when needed. When I use good sharp drills and pay attention to starting the holes , they drill pretty straight .