Yesterday, 04:23 PM #22
HiBC
Senior Member
Join Date: November 13, 2006
Posts: 2,933 Back to the ring,here is what I suspect.
Typically,after chambering,a chamfer or radiused lead in is put on the sharp corner of the chamber mouth to keep that corner from scraping the brass as it enters the chamber.
If this was done with a tool that is dull,improperly ground,or set up wrong,instead of a good clean cut,the steel is deformed...mushed aside,That would actually form a high ring of steel at the chamber mouth.
A good feeler tool is a mechanical pencil with a thin lead.Hang the lead out a bit and drag it over the edge of the chamber mouth.Do you get any catch?
HiBC, that would be it, problem, wrong chamber, the mouth of the chamber is ‘just in front of the rim’ as the link furnished from SAAMI illustrates. The ring on Wyoreman’s case is (wild guestimate) .250”++ ahead of the chamber mouth. Again, his chamber does not have a protruding case head.
Yesterday, 06:20 PM #23
603Country
Senior Member
Join Date: January 6, 2011
Location: Thornton, Texas
Posts: 1,550 dahermit covered it pretty well. As for case sizing, you can use your FL die and partial resize. Set the bottom of the die about 1/8 of an inch above the top of the shell holder when the ram is raised. It'll size most of, but not all of, the neck. Try it. Works fine for me, but only on tapered cases. Doesn't work worth a darn on 223, but works on 270 and 220. That's what I'm doing right now with my 220, though I don't know if I settled on exactly the 1/8 inch gap.
1/8” off the shell holder added to the deck height of the shell holder is 1/4” or .250” meaning .250” of the case from the head of the case up is not being sized, meaning he would be using the versatile full length sizer die as a neck sizer die, because? the die will be backed off the shoulder of the case .125”. That leaves sizing a case, according to reloaders to two choices, ‘BUMP .002” or back the die off .125”.
AGAIN: Reloading is about keeping up with more thoughts than one at a time. REDDING makes shell holders, Redding makes a pack of 5 shell holders called Competition Shell holders, purchase a set of REDDING competition shell holders and become a competition shell holder reloader. I believe the Redding Competition shell holder are nice, I do not need them, I do not believe they are necessary, at $40.00 plus $6.00+ for a standard shell holder the reloader would have close to $50.00 invested in shell holders for each shell holder, then consider the most common/necessary shell holders????? A reloader’s investment in reloading for shell holder could be $300.00.
Back to Redding and keeping up with options outside of the recommended +.002” bump and backed off .125”, Redding offers 5 options between .000 and + .010 meaning Redding shell holders come with 5 options from .000 in increments of .002” up to .010”. That gives the reloader a +.002”, +.004", +.006”, +.008” and a +.010” option. The option gives the reloader an opportunity to off set the length of the chamber with the length of the case if they know the length of the chamber, I can only guess that is the reason Redding named the + side of shell holders Competition shell holders.
Point? Redding offers 5 options from .000” to .010”, reloaders recommend 2 between .000 (.002”) and .125” that is 8 options between .000 and 1.000”, Redding, if extended would be 500 options from .000” to 1.000”. I can duplicate anything Redding offers with a $11.00 investment. One better than Redding, they offer 5 options between .000 and .010”, with an investment I have 10 options between .000 and .010” when adjusting the die off the shell holder. One more time, I adjust the die off the shell holder with the companion tool to the press, the feeler gage. After making the adjustment I can verify the adjustment with a thicker and or larger shim/leaf, with the humblest of tools the reloader can verify, transfer and use a standard, the big seller, the feeler gage can be used with every shell holder for the same investment of $11.00 +/-a few.
For the same $11.00 investment I can size cases for short chambers, for chambers like the 30/06 I can reduce the length of the case .012”, that is .012” shorter than a minimum length/full length sized case or .017” shorter than a go-gage length chamber, that is 17 options between go-gage length and a chamber that is .012” shorter than a minimum length/full length sized case.
With an exception, I purchased a set of #6 Redding shell holders at the Big Town gun show for $5.00, I checked the shell holder deck height, #2 and #10 were correct, the three in the middle are off by .001”
each. Problem? No, I can correct an error with a feeler gage if I was that obsessive.
F. Guffey