Just an example of dimensions that matter. 243,25.06,6.5 Creed, 270,308,35Whelan have head size of 0.470" 6.5Swiss does NOT but measures 0.479".Originally Posted by M-Tecs
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Just an example of dimensions that matter. 243,25.06,6.5 Creed, 270,308,35Whelan have head size of 0.470" 6.5Swiss does NOT but measures 0.479".
Hold Still Varmint; while I plugs Yer!
On this we agree..................
What is a 6.5Swiss?????????????????????????????????????????? ????????????????????????????
The only dimensions that have relevance for a 6.5x55 Swedish are the dimensions of the 6.5x55 Swedish specifically the cartridge and chamber specs.
Not interested enough to do the research but the 6.5x55 Swedish was a military cartridge designed long before CIP or SAAMI so like a lot of the cartridges of that era there are more variations than with newer cartridges. Those variations do cause issues at times. The dimensions of other cartridges have zero relevance unless one wants to use them to form another case.
Last edited by M-Tecs; Yesterday at 12:45 AM.
2nd Amendment of the U.S. Constitution. - "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
"Before you argue with someone, ask yourself, is that person even mentally mature enough to grasp the concept of different perspectives? Because if not, there’s absolutely no point."
– Amber Veal
"The Highest form of ignorance is when you reject something you don't know anything about".
- Wayne Dyer
Did you really have case head separation? Or are you just seeing expansion above the web?
As Mr Wallace pointed out, the 6.5x55 is prone to show expansion there, with brass that has undersized base dimensions.
Do you reload other cartridges, or only this cartridge for this one rifle?
“Turn up the heat, and cast cheap!”
Barry54
I did have separation on old brass which is why I purchased new brass. I load other calibers but this is the only one I've experienced this issue with.
A new rifle deserves new brass.
Take the old brass to the scrapyard and forget about it while you eat lunch with the funds you received.
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Somewhere, a very long time, reading about Mauser and his cartridges, i remember something about his cartridge work with the Swedes/Norwegians - the cartridge did not quite meet the pressure velocity requirements requested using the 'standard' 12mm case head, so Mauser enlarged the case head to accommodate the requirements of the contract for velocity and pressure. True? IDK Did the 6.5x55 Krag come before the Mauser? May have been a competitive development.
You mentioned previously having a neck size die. That is the best solution. With cast bullet loads neck sizing will work fine for many firings. With top end jacketed bullets loads you will probably have to partial full length size when chambering and/or extraction becomes overly difficult. Adjust your FL die to size the case just enough to feel a slight 'crush fit" when chambering the case.
The 6.5x55 Swede case has a lot of taper and will "grow" in length when partial sized in a FL sizing die. Neck length trimming [case OAL] will probably be necessary before chambering the partial resized case. If not trimmed after sizing before testing chambering the over length neck may give a false feeling.
Larry Gibson
“Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
― Nikola Tesla
After reading this again, I believe you are conflating a couple of terms. Overworking the brass will work harden the brass. Standard sizing dies including neck sizing only dies overwork case necks by sizing the neck too small than expanding it back to a larger size. Dies are made that way to work with most neck wall thicknesses. Bushing dies are one work around but you need to have consistent neck thickness for them to work properly. The end result of overworking the neck is they will crack at some point if not annealed.
The case body normally isn't overworked to the point it becomes an issue. Overly large chambers would be an exception. That can lead to a longitudinal crack on the case body.
Case head separation is a function of brass thinning in a very specific area not directly related to work hardening. It happens in the narrow band between the case head that does not expand enough to adhere to the chamber walls and the front part of the case that does adhere to the case walls. Pushing the shoulder back too much results in this narrow band thinning to the point of failure.
That point is clearly shown in the animated illustration in post #3 here. https://www.m14forum.com/threads/fir...d-case.521506/
Lots of options on how to deal with these issues. Only you can determine what’s best for you based on you’re the volume and type of your shooting, brass life expectations and accuracy expectations. Secondary considerations would be costs for measuring tools or other more advanced methods and tools.
Last edited by M-Tecs; Yesterday at 09:46 PM.
2nd Amendment of the U.S. Constitution. - "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
"Before you argue with someone, ask yourself, is that person even mentally mature enough to grasp the concept of different perspectives? Because if not, there’s absolutely no point."
– Amber Veal
"The Highest form of ignorance is when you reject something you don't know anything about".
- Wayne Dyer
The unit cost of copper (metal) and wide use of reclaimed (scrap) metals enter the picture as well ......simple fact is every ton of copper you save by thinning your cases is $10k added to your bottom line.....one area where cases are thinned is the base to wall transition zone.......the very location of head separations.
Do you have any actual data to back that up or is it just an opinion? I just compared some Winchester 243 brass purchased in the mid-70's with Winchester once fire brass that I am loading for a buddy. He purchased factory ammo last fall. I sized and volume tested 3 each of the new and old with no noticeable statistical difference.
2nd Amendment of the U.S. Constitution. - "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
"Before you argue with someone, ask yourself, is that person even mentally mature enough to grasp the concept of different perspectives? Because if not, there’s absolutely no point."
– Amber Veal
"The Highest form of ignorance is when you reject something you don't know anything about".
- Wayne Dyer
Three pages of arguing and different opinions. I am not the sharpest pencil in the pack, but I think I would want to check it with headspace gages and know if Tikka needs to fix it. I get that you can let the brass grow and fill the chamber and just size it a few thousands from there, but you paid for a rifle that had a proper headspace. What about factory ammo? While we all deal with tolerances in head space too big is too big, new brass has to be stretch to get to the chamber size at least once and it is never the same after that.
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