Picture was just postedCan you PM or post a picture of your KM tool?
I have a lathe but the conventional K&M neck Turner does the same thing a lot less hassle
Usually when I start turning I do about a hundred pieces ,but I let the tool cool and take a break, I don't get in no big hurry and my total indicated run-out on brass after it's fired is less than 1 thousandths.I think you end up with a better neck. Look at it like this, on conventional turners you have to have clearance for the brass to rotate or heat builds up on the mandrel. Doing it on the lathe the way Jackie does it the mandrel expands the brass and is the rotation driver for the turning process. I’m not sure if I’m explaining it well enough but for me and the way I’m doing my 30BR and 30Dasher brass I fireform unturned brass which still leaves it too small in diameter for a .308” mandrel, then I final expand on the mandrel in the lathe which then rotates the brass to be cut. It really is quicker once you get going, if you were only doing a few pieces it probably isn’t worth it, but for 200-300 at a time I’ll never go back to a hand held turner and drill motor.
Stan, I have found years ago that engine assembly lube works fantastic for turning brass. It’s messy, but I get really smooth cutting. I use a shot glass with about 1/8” in the bottom and dip the cases in. After cutting, take a clean q-tip and clean the inside. Prior to shooting I run them in the sonic in hot water with citric acid. Fruit fresh, 2 tablespoons per gallon of water. It removes all traces of the oil.I think my K&M is removing chips.View attachment 1149395
Question for those using the K&M or similar tools; do you ever see results like this? Specifically the uneven cut at the shouder:
View attachment 1149513
Maybe not that bad but that is the reason alot of people prefer their setup to float (held by hand). It happens mostly when expanding up where the case cant be supportedQuestion for those using the K&M or similar tools; do you ever see results like this? Specifically the uneven cut at the shouder:
View attachment 1149513
HSL59?I don't usually neck turn....but when its necessary that I do. I use a Hardinge Precision toolroom lathe, with Hardinge collets and turned manderl similar to what others do.
Buy a ratty used pickup truck and a American/ European good quality used lathe, and milling machine...and take classes to learn how to use them...if you're the mechanical type...or Become a machinist, learn old school craftsmanship, not the button pusher computerized machine tool technology I had to go back to college for. The new truck got old and is worth little...the machine tools hold value longer. And you can build a custom rifle in a day ...or 2 when ya get old and lazy ....want a 6 dasher? Build it today shoot it tomorrow....Ordered the parts ... Bartlein barrel arrived just before noon, chambered & threaded the new barrel, take off barrel of the donor barreled action, action trued, muzzle brake added, machine bolt knob, m16 Extractor installed, installed Aluminum chasis, machine mag latch, install scope...load some ammo. Shoot the next day...no waiting on someone else to build You a quality rifle to your standards...no hiding the imperfections, or mistakes..shoots good leave it alone or modify any part for improvement or individual taste. Didn't like the 6 dasher, chamber the barrel to 6 Creedmoor, or the more exotic 244 H&H.Not too many shooters have their own lathe.
Nope, Hardunge HLVH super precision toolroom lathe. 1.375" spindle hole so I can chamber and thread barrels. Made in England. About $25,000 new years ago, good used $12 to $15000. Who knows at today's prices and how much it's been abused or used...Hardinge are excellent lathes their bearings are as good quality CNC lathes today. Ran em both alot professionally for 35 yrs on mechanical and about 15 years on computerized, as the computerized took over and inundated every aspect of production. I WAS EVEN BAR CODED for total porduction control ...the only mechanical lathe left in this large world class production shop was a Hardinge HLVH EM toolroom super precision, and I'd often run in and turn out a part while my 2 CNC mills were running, on their cycle time.HSL59?
Sounds crazy…. right. I guess it can be done this guy has it downYou mean you can put the brass back on running it backward?
I don't usually neck turn....but when its necessary that I do. I use a Hardinge Precision toolroom lathe, with Hardinge collets and turned manderl similar to what others do. Fast and accurate done 800 50 BMG and many hundreds of 350 Rem Mag necked down or up from other magnums 7 mag to old 300 H&H and 375 Weatherby before it became the new and improved 378 mag. Or weird experimental case forming and extractor grove cutting, like 308 to 6mm ARC just so see if it can be done for emergency information. Or 30-30 to 30 Rem to get an old gun running...don't turn necks, on any standard cartridge. It made accuracy worse in the old 17 Remington experiment in a factory chamber I ran many yrs ago...and I always order no neck turn reamers.
But doesn't every reloader and gun enthusiasts own a precision lathe and Bridgeport mill plus at least $50,000 in tooling? And spent many years in apprenticeship & college on learning to use machine tools. Too bad, cause that's a career you could really apply to your hobby...and go on wild experiments, like a child and with a motorized erector set. An industrial salvage yard just down the street, lots of cool stuff, metals with PO numbers still on the remnants..to get the exact material your looking for cheap. Plus really exotic stuff too expensive to buy or to heavy to move...dropped industrial contracts with thousands of pieces brand new, sold as scrap, in most of the common metals and alloys. No more 200 lb billits of zirconium, copper or titanium these days because if theft from industrial sites for the average person to buy...or posses, paperwork and government control. Plus zirconium is dangerous for the average guy to machine. Probably advise against it unless you're building your own nuclear reactor or cluster bombs...where it works great.