Neck turning

[Schnyd112]

After doing some more last night, I think it was a combination of feeding the brass too fast and not keeping the speed consistent with the drill. They look much better now, I just need to keep practicing. I will post up some photos tonight of what I end up with. I only did 1 last night, then I dropped it and bent the neck so it would not make a very good picture. It is definitely not something to do when I am out in the cold garage, or when the kids are awake. I need to really concentrate to feed the brass, especially when I only have a little material to remove.

I appreciate all the help, I will keep updating this thread as my skills increase.

 

[dok7mm]

You'll get the hang of it over time. You are right about the need to concentrate when turning necks, but that is true about most aspects of precision reloading. Good Luck

 

[flashhole]

good post dok

 

[Schnyd112]

Agreed. I am pretty meticulous about my other operations, taking time to make sure everything is as perfect as my tools allow. I have taken the dive now with a custom chamber and a round that is more suited to long range. I previously shot a .220 swift, bone stock, and did pretty well considering. (.224 bc with the swift is the lowest on the line by at least a factor of 2, close to 3 in most cases) When I was having this much trouble I figured I needed to go to the place where I have found the best info and ask for guidance.

 

[tbrice23]

There is several variables to get smooth cuts on metal. The angle of relief and chip angle on the tool affect finish. The inches of cut per minute effect finish. Circumfrence of shaft X RPM = Inches of Cut per Minute.

Use a lubricant that will stand the speed to keep the case from gaulding, heating and expand the neck a couple thousandths which may allow the case to chatter on the mandrel and cause problems. Try using a turning tool that runs faster than 300 rpm may give you a better finish. You will just have to search to find the combination to get a smooth finish. Good Luck in a solution.

As far as lubricant goes ,I've tried everything. Tap Magic is the best thing I've ever used.
Recently got the (new) Hornady neck turning rig, for thinning some necked down 300wsm brass for 270wsm. It's good for hunting brass but I wouldn't use it for my benchrest brass. Honestly I think I should have turned twice instead of cutting. 0025" at one turning.

 

[Schnyd112]

So I am progressing. They look pretty good now, the photo is a progression. The left is the first one I did, then the right is how they look now. Turn up the speed a little (400-450 rpm) make sure everything is nicely lubed, and progress slowly, but not too slow. When it is working well the brass just kind of curls off.

 

[flashhole]

Looks good. I think you are getting the hang of it. I've been turning a few myself today. A good way to pass the time on a cold winter day.

 

[LoneTraveler]

Looks like you got all the ducks to walk in line. Right lubrication,Speed of work (rpm), Speed of cut, and it came out just the way you wanted. Good Luck in the rest of the project.