Re: Case neck turning?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: vinconco</div><div class="ubbcode-body">I used my Forster outside neck turner and chuck it up in a drill press using a Forster collet base to hold the cartrige. </div></div>
I chucked my Pumpkin turner into a vice on my drill press and my results were horrible... yes, I had an improvement, but I tested the drill press, the electric screw driver with the case in a caseholder in one hand and the turner in another, and manual turning. Manual was the best and the drill press was the worst. I expected the opposite.
I read up on it, and the issue is that the turner needs to "float." People who chuck one end "float" the other by holding the turner loosely. If my technique were better, I am sure the screwdriver method would work for me, but I have been doing it by hand. It is a lot of work, but I don't think it takes that much more time than an electric drill.
Another hint is to turn twice, once removing about 80% of the material, and the next time to do a final cleanup. This leads to much much greater consistency. It is also a lot of work and I know most long range shooters aren't interested in doing that kind of work... but I get my consistency down to +/- .00005" of variability in the neck (yes, that is the right number of zeros).
I say that... after you shoot it a couple of time, a lot of the variability comes back (back to .0005"), which means you have to turn it again (only once this time). Then the neck stays consistent. You have to watch that turn after 3 firings. If you bite into the neck like you did in the initial turn, you will make the brass too weak in the neck juncture and your case necks will stay in the chamber after you fire (don't ask me how I know).
That is a lot of turning... more than most people are willing to do. That is a benchrest practice and I am willing to admit it is way more than necessary, but I am anal.
