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> Forming 257 Roberts brass
Forming 257 Roberts brass
@ 01:31 pm (GMT) |
Shaun MiloI know that 257R can be formed by necking down 7x57 brass or necking up 6mm brass. I saw some 6.5 x57 brass for sale, could this be necked down? Thought I saw somewhere that the neck would be too short? Any help would be appreciated.Shaun |
Replies
@ 08:32 am (GMT) |
Nathan FosterRe: Forming 257 Roberts brassHi Shaun, the case lengths are basically the same (56.7mm).The length to the shoulder / neck junctions differ. The 6.5x57 is 49.3mm. The .257 is 48.56mm. In other words, you will need to reduce the shoulder length of the 6.5 brass to fit your chamber. Hope that helps a bit. |
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@ 01:59 pm (GMT) |
Shaun MiloRe: Forming 257 Roberts brassThank you sir for the quick reply. I did not know if different shoulder angle made a huge difference. Do you think that just putting them through a FL roberts die will work or would I have to first create a false shoulder? |
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