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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5 sst (sherman short tactical) arrived
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<blockquote data-quote="tim_w" data-source="post: 1461536" data-attributes="member: 11132"><p>I had actually figured that out a few weeks ago (simulation only) but never posted anything on it as most seem to not use the newer long TMKs or I do not see much talk for whatever reason. I thought we had spoken about how the ELD and Bergers lined up very well with the same freebore so I got some measurements for the TMKs (what a PITA finding someone with good numbers) based on your cases OAL and neck length I worked the numbers and they seemed to work very well for all the bullets and getting proper jump to lands. The COAL you had always mentioned, of 2.8ish, to me and then looking at the various ACIS, Accurate, and a number of the internal like savage etc it seemed to work well with the numbers I got from the bullet specs as they were given to me.</p><p></p><p>I did try to explain it when the topic came up recently but....... I did not want to derail your thread...</p><p></p><p>I am happy it looks to work. The big thing is having enough twist. I know on the 6mm 110s when they tried half twist slower than recommended some got slight increase in vertical stringing that those with the full 7 twist did not get. At altitude that likely is not a issue though but here on the east coast its hard not to end up shooitg somewhere at sea level or close to it from time to time.</p><p></p><p>FYI I think the coal I came up with for that lot of bullets was 2.91 but as these are tipped I think it can varying that much lot to lot but it still works or should in terms of the mag limits.</p></blockquote><p></p>
[QUOTE="tim_w, post: 1461536, member: 11132"] I had actually figured that out a few weeks ago (simulation only) but never posted anything on it as most seem to not use the newer long TMKs or I do not see much talk for whatever reason. I thought we had spoken about how the ELD and Bergers lined up very well with the same freebore so I got some measurements for the TMKs (what a PITA finding someone with good numbers) based on your cases OAL and neck length I worked the numbers and they seemed to work very well for all the bullets and getting proper jump to lands. The COAL you had always mentioned, of 2.8ish, to me and then looking at the various ACIS, Accurate, and a number of the internal like savage etc it seemed to work well with the numbers I got from the bullet specs as they were given to me. I did try to explain it when the topic came up recently but....... I did not want to derail your thread... I am happy it looks to work. The big thing is having enough twist. I know on the 6mm 110s when they tried half twist slower than recommended some got slight increase in vertical stringing that those with the full 7 twist did not get. At altitude that likely is not a issue though but here on the east coast its hard not to end up shooitg somewhere at sea level or close to it from time to time. FYI I think the coal I came up with for that lot of bullets was 2.91 but as these are tipped I think it can varying that much lot to lot but it still works or should in terms of the mag limits. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5 sst (sherman short tactical) arrived
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