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> 6.5x57
6.5x57
@ 01:05 pm (GMT) |
Sam SpearsIn regards to the article about the 6.5x57 in the Hand Loading section.https://www.ballisticstudies.com/Knowledgebase/6.5x57.html You state that the 7x57 brass must be necked up 30 caliber to form a "false shoulder". That is over working the metal in the neck stretching it up and down again like a rubber band. That reduces case life. There is a difference between 7mm (.284) and 6.5mm (.263). Adjust the full length sizer die down gradually until the brass will just fit in the chamber. It's amazing you have a ready made "false shoulder" of the difference between outside diameter of the 7mm to the 6.5. That small "false shoulder" will be sufficient to hold the case static in the chamber until fire formed. |
Replies
@ 01:46 pm (GMT) |
Nathan FosterRe: 6.5x57Hi Sam, I did not actually state that. I stated that brass could simply be be necked down. But for those wanting more, they could create a larger false shoulder with a very small step up.But, per chance there was one typo there so it gave me an opportunity to clear that up and make the wording more concise so thanks for that. I actually make quite a few typos which can lead to misunderstandings. I have also had basic errors, generally in the history section (I can't test history, I can only test what is in front of me). Folk can be very helpful in correcting me which I am grateful for. I do my best to write as succinctly as possible. But over the course of tens of thousands words, I do trip up. I make a lot of mistakes when I am working on my personal test rifles. It is only through full trial and error that I gain expertise with each model. Its just something you have to stick out. Regarding shoulders. Every once in a while I come across a rifle with generous chamber dimensions. I have also come across batches of brass of minimal dimensions. Two things can occur in this situation. The first is poor ignition, the second is stretched brass. It was for the folk struggling with this type of situation that I wrote for. Sometimes things just don't go to plan the way we expect and I do try to cover these aspects. Those who want to go the full distance, can of course anneal their cases. Hope that makes sense. |
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@ 07:10 pm (GMT) |
Sam SpearsRe: 6.5x57If you have a rifle chambered in a bottleneck caliber that has a .020 neck diameter difference between fired and sized, there is a big problem. Your cases won't even last 5 firings, the necks will crack even if neck sized. hence wasted time at the bench making the cases. If it's a sloppy chambered military rifle I doubt you will garner the improved accuracy from reloading, because tight sized/fired tolerances and concentricity are the bread and butter of accuracy. I think about the time used, will the product be long lasting and worth while before I get started. |
@ 10:04 pm (GMT) |
Warwick MarflittRe: 6.5x57Well Sam you'll just have to buy factory ammo like everyone else does when they want Maximum reward from minimum effort. As Mr Foster said he's trying to find solutions for all situations. If you anneal the brass before the sizing and between steps if you want to keep the brass soft and bendy. So be it. One of the members here has made his own Wildcat cartridge and from memory it's 20 steps from donor case to mammoth slayer. I guess it comes down to how much effort you're prepared to put into your chosen calibre. Do what you think is best for your reloading. Other people will have their own ideas and are free to choose how and what they do it's just how it goes. As long as it's safe let them bend brass as and however they wish. Cheers mate. |
@ 02:32 pm (GMT) |
Kenneth KephartRe: 6.5x57I'm betting you can do the same thing i do for 257 Roberts casings.Simply run 7X57 Mauser in a 6.5X57 die. |
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