280 Ackley Question

[L.Sherm]

Here is a good read on Redding website explaining the difference between the 2

 

[BadgeNJ]

Yep went through that with redding when I ordered the dies before the barrel was cut. Definitely have the SAAMI chamber.

 

[Badlands Griz]

Seriously. I'd love for someone to answer this.
It's standard practice to bump shoulders back. 002 +/-, and that's only at 1 end of the case. By FL sizing a cylinder (cartridge case) .005 you are only moving the brass, in any one location,.0025. Thats a whopping difference of a half a thousands!
If the only detrimental result is that a person has to pull on the handle a little harder...? There's no brass being over worked here.
Why in the ever loving s#!+ did this thread turn into lathes, lawyers, hones, emails, and whatever else is coming down the pike?
Can someone answer this?

 

[jarnold37]

Seriously. I'd love for someone to answer this.
It's standard practice to bump shoulders back. 002 +/-, and that's only at 1 end of the case. By FL sizing a cylinder (cartridge case) .005 you are only moving the brass, in any one location,.0025. Thats a whopping difference of a half a thousands!
If the only detrimental result is that a person has to pull on the handle a little harder...? There's no brass being over worked here.
Why in the ever loving s#!+ did this thread turn into lathes, lawyers, hones, emails, and whatever else is coming down the pike?
Can someone answer this?

If you ever have a case separate and leaves part of the case in the chamber, some of these things come into consideration and importance

 

[Deleted member 109523]

Here is a good read on Redding website explaining the difference between the 2

I remember reading that before. My redding comp die sizer just reads 280 ackley Imp FL 9P. I didn't think that with a fairly straight walled case, that there would be that much different in sizing down only .015 more. but I'm only a few yrs into this. Maybe I'm wrong. I don't even know what the 9P stands for

 

[Deleted member 109523]

Here is a good read on Redding website explaining the difference between the 2

after reading that again, I believe mine are the SAMMI spec. But with the best of case lubes, I was having a horrible time sizing a case. When I used the hornady die, everything was perfect. It was sizing the the bottom only .002 at the most.

 

[Badlands Griz]

If you ever have a case separate and leaves part of the case in the chamber, some of these things come into consideration and importance

I understand that. What part part of FL sizing .005 is beyond tolerance? What is spec? You didn't answer my question.