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Rifles, Reloading, Optics, Equipment
Reloading
Belted magnums reloading, from scratch
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<blockquote data-quote="MagnumManiac" data-source="post: 302656" data-attributes="member: 10755"><p>Larry,</p><p>What you're showing me in that pic is case thinning from oversizing, it's not a bulge above the belt, it's a classic 'stretch ring', which can/does happen in any belted/rimless/rebated case!</p><p>Your quote under the pic contradicts what you stated earlier; "Normal dies push brass REARWARD forming this bulge"!</p><p></p><p>I'm sorry but your theory is all backward.</p><p></p><p>BTW, I measure all my belted mags before and after firing, and the chambers in all my guns run no more than .006" above the base to shoulder measurement. I think you need to look at standardised chamber drawings to show that no chamber, other than H+H, run at .012"-.015" as you mention, if they did, a seperation would occur on the next firing if the brass was sized back to minimum dimensions!</p><p></p><p>I have never had a head seperation with ANY belted mag, or the 'bulge' you refer to!</p><p>I simply think it doesn't exist, and you're selling a product that isn't required.</p><p>A stretch ring can be easily avoided by fire forming your brass with low pressure, but I don't bother doing this with anything other than my Ackley cases, and the 375Weatherby mag, which I've never had a seperation in either.</p><p></p><p>Woods,</p><p>It takes a few firings for a case to stretch as illustrated in the above pic by Larry.</p><p>It DOES NOT occur if you size your brass correctly, or on the first firing of a case, and can be completely eliminated/avoided by 'bumping' the shoulder .001"-.002" back from chamber specs.</p><p>It would take 3 firings of the above case at .010" under chamber spec to develop a stretch ring like that, which is solely due to the above mentioned 'over sizing' condition, not because it's a belted case!</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 302656, member: 10755"] Larry, What you're showing me in that pic is case thinning from oversizing, it's not a bulge above the belt, it's a classic 'stretch ring', which can/does happen in any belted/rimless/rebated case! Your quote under the pic contradicts what you stated earlier; "Normal dies push brass REARWARD forming this bulge"! I'm sorry but your theory is all backward. BTW, I measure all my belted mags before and after firing, and the chambers in all my guns run no more than .006" above the base to shoulder measurement. I think you need to look at standardised chamber drawings to show that no chamber, other than H+H, run at .012"-.015" as you mention, if they did, a seperation would occur on the next firing if the brass was sized back to minimum dimensions! I have never had a head seperation with ANY belted mag, or the 'bulge' you refer to! I simply think it doesn't exist, and you're selling a product that isn't required. A stretch ring can be easily avoided by fire forming your brass with low pressure, but I don't bother doing this with anything other than my Ackley cases, and the 375Weatherby mag, which I've never had a seperation in either. Woods, It takes a few firings for a case to stretch as illustrated in the above pic by Larry. It DOES NOT occur if you size your brass correctly, or on the first firing of a case, and can be completely eliminated/avoided by 'bumping' the shoulder .001"-.002" back from chamber specs. It would take 3 firings of the above case at .010" under chamber spec to develop a stretch ring like that, which is solely due to the above mentioned 'over sizing' condition, not because it's a belted case! [/QUOTE]
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Belted magnums reloading, from scratch
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