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Rifles, Reloading, Optics, Equipment
Reloading
I'm Done With Nosler Brass!
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<blockquote data-quote="Toddxusmc" data-source="post: 1770900" data-attributes="member: 108726"><p>Excellent observation, can't believe it took 3.5 pages of posts to hit on this. This is a very important point to consider When there's such a variance in brass weight. I see he said the difference in volume was only 6+ grains; one would think it would be more than that. Common sense would ask where the variation is coming from. The cases cannot be larger/smaller on outside dimension than SAAMI specifies. Therefore with heavier brass you would think there would be at least a considerable decrease in internal</p><p>dimension, or there would have to be something different in the metallurgy of the brass to increase the overall density. One will definitely have to use different charges of powder between the two differing lots of brass, definitely a possible safety issue. Back in around 2003, I was buying LC & TW 5.56 of different year lots from Jeff Barrlett at GI Brass. I remember one lot from 69 was around 98gr and another lot was 100.5 gr.</p><p>As I worked up there was a 2 grain differential between the max loading using the exact same components (except the brass as stated). That equated to almost an 8% differnce in powder for a 3.5% difference in brass weight.</p><p>Long post but I think we need to address this safety issue that can arise.</p></blockquote><p></p>
[QUOTE="Toddxusmc, post: 1770900, member: 108726"] Excellent observation, can’t believe it took 3.5 pages of posts to hit on this. This is a very important point to consider When there’s such a variance in brass weight. I see he said the difference in volume was only 6+ grains; one would think it would be more than that. Common sense would ask where the variation is coming from. The cases cannot be larger/smaller on outside dimension than SAAMI specifies. Therefore with heavier brass you would think there would be at least a considerable decrease in internal dimension, or there would have to be something different in the metallurgy of the brass to increase the overall density. One will definitely have to use different charges of powder between the two differing lots of brass, definitely a possible safety issue. Back in around 2003, I was buying LC & TW 5.56 of different year lots from Jeff Barrlett at GI Brass. I remember one lot from 69 was around 98gr and another lot was 100.5 gr. As I worked up there was a 2 grain differential between the max loading using the exact same components (except the brass as stated). That equated to almost an 8% differnce in powder for a 3.5% difference in brass weight. Long post but I think we need to address this safety issue that can arise. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
I'm Done With Nosler Brass!
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