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Rifles, Reloading, Optics, Equipment
Reloading
7mm RM splitting necks 2 firings
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<blockquote data-quote="J E Custom" data-source="post: 1865950" data-attributes="member: 2736"><p>I used a lot of Remington brass for the rifles that i could not get Lapua, Norma and DWM brass for and never had any problems with them until the ammo shortage and then I noticed that the new 375 RUM cases were splitting all of a sudden ,so I ran some hardness test on the new cases and some brand new "Older purchased cases" and found the newly manufactured cases were very hard compared to the Old cases so I started annealing all new cases and the problem went away.</p><p></p><p>There are 6 to 8 forming steps depending on the type of case, so this is like firing the case 6 to 8 times unless it is annealed. When a case splits in this location, it is normally because the brass is to hard. so now I anneal "ALL" cases when they are new just to make sure unless they have the hear marks from annealing.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1865950, member: 2736"] I used a lot of Remington brass for the rifles that i could not get Lapua, Norma and DWM brass for and never had any problems with them until the ammo shortage and then I noticed that the new 375 RUM cases were splitting all of a sudden ,so I ran some hardness test on the new cases and some brand new "Older purchased cases" and found the newly manufactured cases were very hard compared to the Old cases so I started annealing all new cases and the problem went away. There are 6 to 8 forming steps depending on the type of case, so this is like firing the case 6 to 8 times unless it is annealed. When a case splits in this location, it is normally because the brass is to hard. so now I anneal "ALL" cases when they are new just to make sure unless they have the hear marks from annealing. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
7mm RM splitting necks 2 firings
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