How do you introduce the oil during chamber reaming?
What lathe speed?

Curious folks wanta know.

Lathe speed about 100 RPMs and I use oil by simply oiling the reamer. I retract the reamer about once every .10 of feed depth.

Squirt a bit in the chamber, squirt a bit on the reamer and go another .10 deeper.

Very simple question not so simple to put into words you may be able to understand if you are not a machinist but here goes. A device has to be constructed that screw’s on to the back of the spindle with a metal stem on it with a hole %95 of the way through it coming from the chuck end of the device. Machine shops use an oil flow device that can be fitted to a rotating drill bit that has a hole drilled through the spine of the drill this device allows oil to be pumped right down to the cutting surface of the bit to keep the drill cool, lubricated and assist in clearing swarf. This device is what you attach to the part that you have constructed and screwed to the back of the lathe spindle. So simple if you can see it but like I said hard to explain. Suffice to say you are now pumping cutting fluid into the spindle of the lathe as the spindle is turning. Next a 1/3 inch hole is drilled completely through a dead center and the dead center is installed in the other side of the spindle. There are several ways of doing what happens next but the most common method is to install a 3 jaw chuck over the dead center. Run the muzzle end of the barrel through the jaws of the chuck and up against the dead center and hold it there very snug with the tail stock. Then tighten the jaws of the 3 jaw to hold the barrel against the dead center. Next a steady rest is set up to run on the thread extension of the barrel to hold the chamber end of the barrel in alignment with the tail stock of the lathe. Next a drill bit is selected that is about .040 tho smaller than the diameter of the shoulder of the reamer. Using the tail stock rough the chamber to about 75% of finished depth. Now turn on your cutting oil, I like ridgid but any good sulfur base oil is fine. Hold the reamer in a floating reamer holder and use the tail stock to drive the reamer right up to where the rough chamber ends at about 90 RPM. Then insert a go gauge and measure the depth of the rough chamber. Subtract that from the headspace measurement that you have taken from the action and that should be your final cut. For the next cut I always cut .050 tho short and re-check my measurement’s. Most of the time that’s not necessary but I like to double check before I take my last cut. Take the final cut and you are done. I find it almost essential to use reamers with oil grooves on their piolets in order to get enough flow to clear the chips but reamers without oil groves will work too you just cant drive the reamer quite as hard. Rod Henrickson

Rod,

You are 100% correct...It would have to be simpler than what you described!

I chamber with the barrel indicated through the headstock. I use the device made by Gre-Tan for oiling thru the barrel from the muzzle. It has a spring-loaded attachment that you put on the muzzle, held by four nylon screws. Oil is pumped through this revolving fitting, down the barrel and out the breech over your reamer. It really speeds up the process by flushing the chips out the breech end and keeping a constant supply of cutting oil on the tool. Setting the oiler up takes only a few minutes. I made a return out of a roller pan (for painting) and a hose back to my 5-gal bucket of oil and pump.

I like vapodog's approach. This ain't rocket science.