6.5x47 Lapua neck tension question

[Cat64]

Besides the problem I have listed in a thread below, I discovered that the neck tension I get after resizing is not adequate. The cases I am using are brand new Lapua (fired once). The outside diameter of a fired case is .293 (if I drop a bullet in the case at this time it will go down with a very slight pressure). After resizing I get the diameter to .289. When seating a bullet I get obvious indicators of "forcing" (i.e. hard to push, shavings at the mouth). The diameter of a loaded round is .290. The book dimensions for a loaded round (as stipulated in the Berger book...I load Berger bullets...) is .291. Question is what neck tension I will need to hone my die (I will send it to Forster and ask for this service; they have done it before for me)?

 

[mdmp5]

Ok, first off, forget the book. All that matters is what you are seeing with your own components and equipment. If your sized brass gets you to 289, and a loaded round is 290, that is .001 of neck tension, which is ideal. You are probably seeing shavings because you haven't prepped your case mouths adequately with a clean chamfer.

 

[Cat64]

Ok, first off, forget the book. All that matters is what you are seeing with your own components and equipment. If your sized brass gets you to 289, and a loaded round is 290, that is .001 of neck tension, which is ideal. You are probably seeing shavings because you haven't prepped your case mouths adequately with a clean chamfer.

Great. Is it recommended to chamfer the case even though you have not trimmed the case? I never had to do that in any other calibers I reload for.

 

[mdmp5]

Great. Is it recommended to chamfer the case even though you have not trimmed the case? I never had to do that in any other calibers I reload for.

I do, and in your case, it sounds as if it is definitely necessary since you are getting shavings. You don't have to gouge it, just a gentle pass

 

[DHDeal]

Besides the problem I have listed in a thread below, I discovered that the neck tension I get after resizing is not adequate. The cases I am using are brand new Lapua (fired once). The outside diameter of a fired case is .293 (if I drop a bullet in the case at this time it will go down with a very slight pressure). After resizing I get the diameter to .289. When seating a bullet I get obvious indicators of "forcing" (i.e. hard to push, shavings at the mouth). The diameter of a loaded round is .290. The book dimensions for a loaded round (as stipulated in the Berger book...I load Berger bullets...) is .291. Question is what neck tension I will need to hone my die (I will send it to Forster and ask for this service; they have done it before for me)?

I would suggest that you chamfer all of your cases when new or from once fired factory ammo. It is one of the steps I do to ALL new cases (and to all freshly trimmed cases). It is just something you have to do. I bet why you are feeling the bullets seating hard is because you have a sharp edge with no chamfer. The copper (from those expensive Bergers) at the case mouth as you described tells the tale.

Sending your die to get it honed will only make it give you less neck tension, not more.

 

[Cat64]

I would suggest that you chamfer all of your cases when new or from once fired factory ammo. It is one of the steps I do to ALL new cases (and to all freshly trimmed cases). It is just something you have to do. I bet why you are feeling the bullets seating hard is because you have a sharp edge with no chamfer. The copper (from those expensive Bergers) at the case mouth as you described tells the tale.

Sending your die to get it honed will only make it give you less neck tension, not more.

Appreciate you guys and your knowledge. Went and chamfered a few cases and voila...problem solved with neck tension. The problems I still have is (see my the other post) not being able to bump the shoulder past a certain point which makes the cycling of resized cases "forceful"