6PPC resize reamer dimension?

P

P.Ericson

Member
Just wanted to ask you guys how much smaller you have you resize reamers ground for a 6ppc? Read something about .003" smaller at the base, and .002" at the shoulder. What kind of squeze do you get then? I´m looking for a little less than a thousand at the base and a little less at the shoulder.

Regards,
Peter
 
What you read about .003 at the base and .002 at the shoulder is exactly what I shoot for, although I don't make size dies, I just get the die first and order the chamber reamer that amount larger. It will tend to size the base about .001 more or less, but closer to the shoulder seems to size a bit more (probably due to the hardness factor), and that works very well. It is important that the die sizes new cases at least .001 because as they work harden with subsequent sizings they will definitly spring back a bit more. With all the variables involved, it is still possible to not have a perfect match and sometimes either the chamber needs to be polished a little or the die may need to be honed to get it perfect. In the case of PPC or BR cases, I just order the size I need from Lynwood Harrel and keep doing it until I have either the perfect die or all of them. A perfect PPC die is a treasure and if you can make a good one for a customer's rifle it is a big plus.

Scott
 
Last edited:
SGS said:
I just order the size I need from Lynwood Harrel and keep doing it until I have either the perfect die or all of them. A perfect PPC die is a treasure and if you can make a good one for a customer's rifle it is a big plus.

Scott
Click to expand...


Why not send Harrels 3-4 fired cases? They can make a custom fit.
 
Thanks guys. I guess I´ll order the reamer -.003 at the base and -.002 at the shoulder and then just polish the die to perfection before hardening. Should be pretty OK and for sure alot better than the dies I´m using now.
 
Wildcatter said:
Why not send Harrels 3-4 fired cases? They can make a custom fit.
Click to expand...

Hindsight. Since I have three 6PPCs and fit several new barrels each year and I have (so far) 4 different reamers, I don't mind having a set of Harrels dies. I can start with new cases, size with a #2.5 for 10 or 12 firings and when they start to give a little bolt click, just switch to a #3 and shoot them some more.

Scott
 
Dear all, a quick question regardings neck dimensions.

If I order a finisher reamer with a .268 neck and I want to use bushing dies only, do I need a resizer reamer with .268 as well or should it be adjusted a little?

According to the mfg it is recommended to order the resizing reamer with „-.012“ resulting in a .256 neck.. ??
 
If you are using a bushing die than you just order the size bushings needed, usually for a .268 neck it would be .262-.264 bushing depending on your neck wall thickness and tension desired. I would find -.012 to be excessive sizing on anything related to reloading.
 
Dear John, thank you! They mentioned the resizing reamer (to cut the bushing-die blank) should be at -.012 —> that‘s why I am asking

Edit: -.012" at the neck
 
Last edited:
The reamer, if your operation is set up correctly, should ream the die to the exact dimensions. You only want it to be approx. .003" under depending on your preference of sizing... .012" is to much by far. You would be better off with standard dies of the shelf.
 
I updated my post above - I think it was not clear, that the -.012" was for the neck only --> Sorry.

Can you please have a look at the pictore below?
draft.png


--> my final neck diameter in the chamber should be .2680, therefore the finisher has to cut a .2680 neck (OK)
--> the reamer mfg mentioned that the resizing reamer should have a neck diameter of finisher - .012 = .2560 --> This is what I do not understand
--> I understand that (even in a bushing die) a small portion of the neck will still be left (.005" ?) --> the bushing sits on top of that.
(The bushing does not sit directly on top of the shoulder - as shown in the picture of the bushing die above)
If the .005" of neck have a diameter of .256" (as shown above) I believe it does not matter what size the bushing has --> this makes no sense to me...


The big question: Should the resizing reamer have a .2680 neck as well? (Same as the finisher?)
I assume "yes"?


Thank you again and sorry for the confusion!
Stephan
 
I would think .268 would be good or even .2675. This area is the spot that usually centers up the case in the chamber to hold the bullet in alignment with the bore.
 
You must log in or register to reply here.
Back
Top