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Rifles, Reloading, Optics, Equipment
Reloading
How much variation in shoulder from chamber to chamber?
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<blockquote data-quote="keithcandler" data-source="post: 1758454" data-attributes="member: 3728"><p>Short grass, your thinking is right on the money, but out of 1000 reloaders, maybe one or two will get it. We use the same thinking on all of our bench and long range cartridges with Harrells and Whidden custom dies.</p><p></p><p>I had Larry's die for 10 years, never used it on 7 mags, 300 win mags, and 7 stw's.</p><p></p><p>I am a nit pickers nit picker on this kind of thing. I found on these mag cases, a full length sizing every firing gave me best accuracy, and this goes against what I do for my 6 PPC's, 6 BR's, 6 BRA's, 6x47's, 6 XC's, etc.</p><p></p><p>So, I take a case that has hard extraction, set the full length sizer(each rifle has it's own) to where the bolt closes easily ending up with a fitted case for that chamber. Dies are adjusted down slowly with very small adjustments so as to push the shoulder back as little as possible. Lock ring is locked, and only one brand of brass is used in that rifle. I start off with a case guard 100 with 100 new cases, by the 7-10th firing, the barrel is close to toast.</p><p></p><p>I shoot Rem brass in the 7 Mag, no particular good reason, just started off with it. I get about 7-10 firings on the brass, then start to see a ring form in front of the web. Time to throw that piece of brass away, and I am speaking of factory chambers.</p><p></p><p>Likewise, on my custom 7 STW's with a Match reamer that I have, no brass has ever been thrown away from case stretching, however the hot loads that I shoot open primer pockets after 4-6 firings.</p><p></p><p>Since 1978, I have never had any issue with a "Belt" of any kind using the method above.</p><p></p><p>My mags are hunting rifles, and groups at 550 yards are from 2.5-3.5" with tuned factory rifles and smaller with custom rifles.</p><p></p><p>I have talked to several die makers to try and get them to make sizing separate steps. A sizer for sizing only the web, then another for pushing back the shoulder only. Std Forster neck sizers will push back shoulders, but getting a die maker to make a series of web sizers is out of the question at this time. The web sizers could be made like straight wall pistol carbide sizers, but there is no demand at this point. </p><p>Truth is, not many people reload, and few are into advanced reloading like Short grass and I are...maybe 10% of the reloaders MAX.</p></blockquote><p></p>
[QUOTE="keithcandler, post: 1758454, member: 3728"] Short grass, your thinking is right on the money, but out of 1000 reloaders, maybe one or two will get it. We use the same thinking on all of our bench and long range cartridges with Harrells and Whidden custom dies. I had Larry's die for 10 years, never used it on 7 mags, 300 win mags, and 7 stw's. I am a nit pickers nit picker on this kind of thing. I found on these mag cases, a full length sizing every firing gave me best accuracy, and this goes against what I do for my 6 PPC's, 6 BR's, 6 BRA's, 6x47's, 6 XC's, etc. So, I take a case that has hard extraction, set the full length sizer(each rifle has it's own) to where the bolt closes easily ending up with a fitted case for that chamber. Dies are adjusted down slowly with very small adjustments so as to push the shoulder back as little as possible. Lock ring is locked, and only one brand of brass is used in that rifle. I start off with a case guard 100 with 100 new cases, by the 7-10th firing, the barrel is close to toast. I shoot Rem brass in the 7 Mag, no particular good reason, just started off with it. I get about 7-10 firings on the brass, then start to see a ring form in front of the web. Time to throw that piece of brass away, and I am speaking of factory chambers. Likewise, on my custom 7 STW's with a Match reamer that I have, no brass has ever been thrown away from case stretching, however the hot loads that I shoot open primer pockets after 4-6 firings. Since 1978, I have never had any issue with a "Belt" of any kind using the method above. My mags are hunting rifles, and groups at 550 yards are from 2.5-3.5" with tuned factory rifles and smaller with custom rifles. I have talked to several die makers to try and get them to make sizing separate steps. A sizer for sizing only the web, then another for pushing back the shoulder only. Std Forster neck sizers will push back shoulders, but getting a die maker to make a series of web sizers is out of the question at this time. The web sizers could be made like straight wall pistol carbide sizers, but there is no demand at this point. Truth is, not many people reload, and few are into advanced reloading like Short grass and I are...maybe 10% of the reloaders MAX. [/QUOTE]
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Reloading
How much variation in shoulder from chamber to chamber?
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