I am recepetive, I just don't agree that's all. No big deal. You wanna make it a big deal that's on you. I'm not a F class shooter, and never will be. Maybe that should clear things up.
I guess I'll leave you F class guys alone then, and you're right I don't fit in. I guess you guys assumed I'm a F class shooter, right?
I could try to 'splain it, but you will get much better info if you use the sites search function where you'll even find pics which best show what a donut is. FWIW I have a bench mounted magnifier that allows me to determine how far to cut into the shoulder. I use K&M turners which have a stop that indexes off the case neck- so the cases must be of consistent length first.
where the shoulder ends at the case body, you sqaure it off. I had a feeling that's what it was but I guess Hornadys take on weaking the case is wrong. I'm sure you never had a case fail from machining off a donut. It makes a tighter fitted case to chamber.
I did not.
Sometimes or most times it's easier to go this route rather than go crazy and do a search to find the answers I found here.... about machining a cartridge case. I do believe I am outclassed, but at least I know that the Hornady neck turner tool will meet my needs. Is a factory chamber cut anywhere near a F class chamber? If I offended you I apologize, and will stay clear of making comments I shouldn't.
Not quite. Do the search. Yes, you can end up with necks separating from case body if you cut too deep into shoulder. In short, a donut forms from brass flow from firing that causes an internal ring that interferes with bullet seating. Not to be confused with a carbon ring that forms inside the chamber just ahead of the throat where the case neck ends.
I did a search and found two cut opened cases that showed the bottom portion of the shoulder squared.
The donut appears when the neck-shoulder junction of the newly formed case ends up closer to the base than the parent cartridge. This donut must be removed or dangerous pressures will result due to the lack of clearance for the case neck to release the bullet. Again, we recommend a minimum clearance of 0.003". I see from the pic below, yes.
again I'm not looking at a M70 or 721 shooting F class groups
With all respect, why are we having this conversation? You have made up your mind as to what is best for you. Your threads title is "what beats a hornday neck turning tool". A more fitting title would be "Come recommend me a neck turning tool, so I can laugh at your recommendation, say f class shooter a bunch, and argue that world class shooters are incorrect in there equipment decisions". If your mind is made up please buy your neck turner and report back on your results. Producing threads that are meant to be click bait are typically not productive if you are actually seeking guidance.
If you can convince me that I need a neck turner that's better to get less than a half inch group at a hundred yards.... I'm all ears. I respect you guys and am sorry to have offended you.
IMHO, neck turning for a factory chamber will yield worse accuracy. Spend the money on a solid benchrest, windflags, a wider variety of components.
I don't turn a lot of brass either. My .223 and 6.5x47L have standard chambers, so I only turn those necks when I measure neck wall thickness variations of more than .001. My 6br has a tight neck chamber, .266. So I turn necks to .010.
