Confused.....

[ihmsakiwi]

Hi,
I wish to get myself a PMA outside neck turner for an as yet un-fired 284 Winchester barrel for an F-Class rifle I bought some time ago. Up till now I have only been using the 6mmBR barrel it also came with.

I also got many prepped cases, some loaded rounds and a few fired but de-capped rounds and all the reloading apparatus from the same guy who sold me the Barnard / Krieger / McMillan rifle.

What I think I know about the brass I have is the following;

The brand new brass necked up from 6.5-284 measures .3165" O/D.
The few fired brass measure .3125 O/D
The many boxes of sized brass measure .307 O/D
The Redding insert in the L.E.Wilson sizing / de-priming die is stamped .312

1) What I dont understand is if I have a .312 neck sizing collet in the Wilson die how on earth are all the sized brass measuring .307 O/D?

2) As I need to stipulate when ordering the PMA tool what neck thickness I am at a loss what to answer.

Any thoughts.

 

[The Pumpkin]

Hi,
I wish to get myself a PMA outside neck turner for an as yet un-fired 284 Winchester barrel for an F-Class rifle I bought some time ago. Up till now I have only been using the 6mmBR barrel it also came with.

I also got many prepped cases, some loaded rounds and a few fired but de-capped rounds and all the reloading apparatus from the same guy who sold me the Barnard / Krieger / McMillan rifle.

What I think I know about the brass I have is the following;

The brand new brass necked up from 6.5-284 measures .3165" O/D.
The few fired brass measure .3125 O/D
The many boxes of sized brass measure .307 O/D
The Redding insert in the L.E.Wilson sizing / de-priming die is stamped .312

1) What I dont understand is if I have a .312 neck sizing collet in the Wilson die how on earth are all the sized brass measuring .307 O/D?

2) As I need to stipulate when ordering the PMA tool what neck thickness I am at a loss what to answer.

Any thoughts.

You have fired brass from an unfired barrel? What is the neck size of the barrel? Is the Wilson die made for 6.5-284 or 284? D

 

[rsmithsr50]

what is the measurement of a loaded round ?( not the 6br)

 

[golong]

It can be tough when people sell things and try to communicate what they did. Things get left out, people forget to check stuff, we don't always hear everything...

Unless you are the one that fired and sized the brass, all the numbers you are working with are useless. As @rsmithsr50 said, measure a loaded round. That will give you the starting point for you bushing (you decide how much to size based on that starting number).

 

[divingin]

To be clear, to get neck wall thickness you take the brass you plan to turn and shoot, seat a bullet, and measure neck diameter. Subtract bullet diameter to get the thickness of both sides of the brass, then divide by 2 to get the neck wall thickness. Not clear on why you need to specify this, though, as the tool is adjustable?

No idea on your neck sizing problem. Wrong bushing? Undersized bushing? Generally you work the above process backwards to get the nominal bushing size: Bullet diameter + (2 x neck wall) - (2 or 3 thousandths for neck tension and to allow for springback) = bushing diameter.

Are you turning the brass to correct for the bushing size? Or are you turning the brass so a loaded round fits the chamber?

 

[mikecr]

You're not ready for neck turning

 

[Dusty Stevens]

I cant figure out where this bushing talk is coming from? OP you need an expander die, expander mandrel, and turning tool all in 7mm caliber.

 

[ihmsakiwi]

Thanks for the tips guys. I have a box of new 6.5-284 Lapua brass to form to 284 Winchester and I wish to turn the necks to off-set some or all of the doughnut I expect to create along the way. On the PMA website when ordering the outside neck turner the question is asked when ordering the "B" model outside neck turner.
I have emailed Pat for guidance.

I have used my Forster outside neck-turner for years but wish for something a little more precise and one that cuts the correct angle into the shoulder.

 

[golong]

Thanks for the tips guys. I have a box of new 6.5-284 Lapua brass to form to 284 Winchester and I wish to turn the necks to off-set some or all of the doughnut I expect to create along the way. On the PMA website when ordering the outside neck turner the question is asked when ordering the "B" model outside neck turner.
I have emailed Pat for guidance.

I have used my Forster outside neck-turner for years but wish for something a little more precise and one that cuts the correct angle into the shoulder.

The question on wall thickness is the DESIRED wall thickness that the tool will come preset to. While the B saves you $60, it is really for those that use the same brass and the same chambers, and the amount of material needed to be removed on the first pass is not much.

IMO, spend the extra $60 and get the Model A. While the B is simple, if it is not exactly what you need changing it is going to require a precise hand and eye, along with testing.

 

[STS]

Unless I'm missing something I really don't understand why you would need to specify neck thickness when ordering a neck turning tool. That's the whole idea of the tool is to be able to make the necks whatever you need them to be. Secondly, unless you know exactly what the neck diameter is in your barrel you are asking for difficulties. Your boxes of .307 OD sized brass was sized with another die or bushing that you didn't get in the deal. You probably need to set it aside for the time being until you get the numbers figured out. It's just adding to the confusion. First things first is to find out what neck diameter is in the barrel.

 

[golong]

Unless I'm missing something I really don't understand why you would need to specify neck thickness when ordering a neck turning tool. That's the whole idea of the tool is to be able to make the necks whatever you need them to be. Secondly, unless you know exactly what the neck diameter is in your barrel you are asking for difficulties. Your boxes of .307 OD sized brass was sized with another die or bushing that you didn't get in the deal. You probably need to set it aside for the time being until you get the numbers figured out. It's just adding to the confusion. First things first is to find out what neck diameter is in the barrel.

The PMA Model B doe not have an adjuster. The only way to set the depth is to loosen the set screw for the cutting blade and then use a depth gauge.

 

[bozo699]

Thanks for the tips guys. I have a box of new 6.5-284 Lapua brass to form to 284 Winchester and I wish to turn the necks to off-set some or all of the doughnut I expect to create along the way. On the PMA website when ordering the outside neck turner the question is asked when ordering the "B" model outside neck turner.
I have emailed Pat for guidance.

I have used my Forster outside neck-turner for years but wish for something a little more precise and one that cuts the correct angle into the shoulder.

Pats a great guy to work with you won’t be sorry. However since your not sure what you need why don’t you wait and turn some new, never fired in another chamber brass use your Forester neck turner until you get the desired thickness and at that point order the model B from Pat!... bare in mind it will only be for your .284 as he sets the model Bs up to your specifications and the model As you can adjust to whatever you want! If it were me I would spend the extra $60 and order the A and when I got my brass where I wanted it I would lock it down and it would be that rifles dedicated turner.
Wayne

 

[Dusty Stevens]

Order a model A for 7mm and an expander mandrel and die. No need to wait to talk to pat. Its not going to come turn key either way so get the one you need for ease of use