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I thought i'd have a 303 reload session today and used some cases (PPU) i'd already prepared few months back.Before i reprimed them i though i'd just try slipping a bullet in the neck and found it dropped straight inside! I know i definetly wouldnt have resized it so little so my question is-does brass have memory so it goes to its initial size over time?

It wasnt a big deal because all i did was simply resize them again,but am just curious.

No memory from my experience reloading (almost 30 years to date...)

I've neck sized 303 and not had the case neck expand in the 4 years the cases were sitting idle

Ooooo'er! I cant work it out then! :lol:

Steve, which make of dies are you using to neck size?

Blu

Steve wrote:Ooooo'er! I cant work it out then! :lol:

naughty zippy

[youtube]http://www.youtube.com/watch?v=FW6_6Nxq ... re=related[/youtube]

Blu wrote:Steve, which make of dies are you using to neck size?

Blu

Lee.

I havent had a problem previously when resizing and once i resized then again the cases were fine.

From what I've been told, by those older and wiser then I, is that .303, for some reason, is very "springy", in that it's not uncommon to run a .303 case through a sizer, only for the neck to go "Nope, none of that" and "spring" back to roughly its fired size.

The first few sessions of reloading .303, I found that about 10% of my home loads would have "spung" necks after I had run them through the FL sizer, I only found out when I seated the bullets and I could actually spin the bullets in the case necks - I, being a novice reloaded, started to ask around, as my theory was; if the problem was "me", then all the cases would have sprung necks, not just 10% of the completed batch. That's when I was told about the "springiness" of the .303 brass.

What I do now is run all cases through my FL sizer, then neck size them, too. *Knock on wood* this seems to have solved the problem.

Feel free to call the above cobblers, that's only what I was told.

Tower.75 wrote:From what I've been told, by those older and wiser then I, is that .303, for some reason, is very "springy", in that it's not uncommon to run a .303 case through a sizer, only for the neck to go "Nope, none of that" and "spring" back to roughly its fired size.

The first few sessions of reloading .303, I found that about 10% of my home loads would have "spung" necks after I had run them through the FL sizer, I only found out when I seated the bullets and I could actually spin the bullets in the case necks - I, being a novice reloaded, started to ask around, as my theory was; if the problem was "me", then all the cases would have sprung necks, not just 10% of the completed batch. That's when I was told about the "springiness" of the .303 brass.

What I do now is run all cases through my FL sizer, then neck size them, too. *Knock on wood* this seems to have solved the problem.

Feel free to call the above cobblers, that's only what I was told.

Thanks for that-atleast i know im not loosing the plot! I only reloaded 20 rounds and it were 6 cases which had sprung out of size.

We hear Albert Pierrepoint is a bit of an expert on this...

meles meles wrote:We hear Albert Pierrepoint is a bit of an expert on this...

The hangman?

Edited to add:
Ok,the penny dropped.I never clicked until afterwards. :lol: