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Rifles, Reloading, Optics, Equipment
Reloading
Excessive bullet run out. How to remedy?
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<blockquote data-quote="Trickymissfit" data-source="post: 672897" data-attributes="member: 25383"><p>that Rhan indicator was used with a special bracket to measure actual flatness of surface plates (smaller ones). It was pretty much worthless for anything else. The Federal electronic indicator would go down to one tenth of an arc second in a controlled atmosphere. Was deadly accurate, and a pain to use. I rarely used it (maybe two or three times), but did use the electronic level attachment all the time to align super precision machine centers. Much easier than doing it with a laser and more accurate. I just mentioned them to give us an idea whatkind of indicators are out there right now, and probably should have gone on into their uses. I have used .000050" indicators every now and then when trying to tweek a tenth or two out of something. They also are not something we would ever need here. I used to lap and scrape surface plates for a living (also large parallels and angle plates, etc). Doing this you gain a huge collection of measuring equipment, and learn to use it. Building machinery you learn to use lasers and the electronic levels, and soon learn you can't get by without them.</p><p> </p><p>With my hand loads, I'd just love to do five tenths TIR all the time, but my equipment won't do it. I learned along time ago it was easier to tweek a tenth or two here and there to make big gains than it was to try and make a huge move todo the samething. Most of my loads fall into the .0015" range (TIR). That's why I like the five tenth indicators so much. But could make do with a good one thousandths indicator if I had to. (remember you can always split the graduations on the dial). And I honestly doubt that loading dies are any closer than .0005" for anything comming off the shelf. (they'll change that much from heat treat or even more.).</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 672897, member: 25383"] that Rhan indicator was used with a special bracket to measure actual flatness of surface plates (smaller ones). It was pretty much worthless for anything else. The Federal electronic indicator would go down to one tenth of an arc second in a controlled atmosphere. Was deadly accurate, and a pain to use. I rarely used it (maybe two or three times), but did use the electronic level attachment all the time to align super precision machine centers. Much easier than doing it with a laser and more accurate. I just mentioned them to give us an idea whatkind of indicators are out there right now, and probably should have gone on into their uses. I have used .000050" indicators every now and then when trying to tweek a tenth or two out of something. They also are not something we would ever need here. I used to lap and scrape surface plates for a living (also large parallels and angle plates, etc). Doing this you gain a huge collection of measuring equipment, and learn to use it. Building machinery you learn to use lasers and the electronic levels, and soon learn you can't get by without them. With my hand loads, I'd just love to do five tenths TIR all the time, but my equipment won't do it. I learned along time ago it was easier to tweek a tenth or two here and there to make big gains than it was to try and make a huge move todo the samething. Most of my loads fall into the .0015" range (TIR). That's why I like the five tenth indicators so much. But could make do with a good one thousandths indicator if I had to. (remember you can always split the graduations on the dial). And I honestly doubt that loading dies are any closer than .0005" for anything comming off the shelf. (they'll change that much from heat treat or even more.). gary [/QUOTE]
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Reloading
Excessive bullet run out. How to remedy?
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