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Rifles, Reloading, Optics, Equipment
Reloading
Neck turning.
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<blockquote data-quote="nksmfamjp" data-source="post: 2783225" data-attributes="member: 1951"><p>Well. As a number, 0.0105" is probably not too thin, but it is borderline. to me normal on a no nt chamber is about 0.0135". I've see nt chambers as tight as 0.008", but I think 0.012" is more common for nt chambers. Mind you these are generally tight neck chambers like at .262" neck in 6mm.</p><p></p><p>Cutting a 30 cal …..well, the brass is supposed to be 0.015" for a loaded round diameter of 0.338" in a factory chamber running 0.343"ish. When you have a 0.343" chamber or abouts, you don't want to cut thinner than about 0.0135, IMO. That is because firing and sizing can overwork the brass pretty quickly with it moving so much. Annealing helps, but…..you can see we are just going too far down the rabbit hole. If that doesn't clean them up 80% or so, toss those cases. They are just too bad….aka Winchester.</p><p></p><p>They should have started at 0.015"ish…..right? What diameter cleans them up 80% or so?</p><p></p><p>Honestly, buying Lapua, ADG or Peterson brass will be an easier "solution" and are not as expensive as we think!</p></blockquote><p></p>
[QUOTE="nksmfamjp, post: 2783225, member: 1951"] Well. As a number, 0.0105” is probably not too thin, but it is borderline. to me normal on a no nt chamber is about 0.0135”. I’ve see nt chambers as tight as 0.008”, but I think 0.012” is more common for nt chambers. Mind you these are generally tight neck chambers like at .262” neck in 6mm. Cutting a 30 cal …..well, the brass is supposed to be 0.015” for a loaded round diameter of 0.338” in a factory chamber running 0.343”ish. When you have a 0.343” chamber or abouts, you don’t want to cut thinner than about 0.0135, IMO. That is because firing and sizing can overwork the brass pretty quickly with it moving so much. Annealing helps, but…..you can see we are just going too far down the rabbit hole. If that doesn’t clean them up 80% or so, toss those cases. They are just too bad….aka Winchester. They should have started at 0.015”ish…..right? What diameter cleans them up 80% or so? Honestly, buying Lapua, ADG or Peterson brass will be an easier “solution” and are not as expensive as we think! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck turning.
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