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Rifles, Reloading, Optics, Equipment
Reloading
Measuring CBTO - What is wrong with my approach?
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<blockquote data-quote="Alex Wheeler" data-source="post: 2387728" data-attributes="member: 101859"><p>I have a video on my website for how I find touch, its a very common method used in the competition world. Still to this day I have not found a more accurate or repeatable method. You have to remove the ejector to get the pressure off the case which will make it hard to feel what your trying to feel. You have to leave the extractor in. But make sure the extractor does not drag on the case rim. Some do and you have to fix that. Defiance extractors need a layer or 2 of tape under them to get then to stop dragging. You also need a straight round, one with a lot of runout will drag in the freebore and you will get false readings. A little effort on the reloaders part and you will get touch numbers to repeat better than .001". And for my customers I especially recommend this, because when I say to start .020 off the lands you will actually be .020 off the lands. With other methods like the Hornady tool your going to be .005-.010 closer to the lands because your pushing the bullet into the rifling more than you think.</p></blockquote><p></p>
[QUOTE="Alex Wheeler, post: 2387728, member: 101859"] I have a video on my website for how I find touch, its a very common method used in the competition world. Still to this day I have not found a more accurate or repeatable method. You have to remove the ejector to get the pressure off the case which will make it hard to feel what your trying to feel. You have to leave the extractor in. But make sure the extractor does not drag on the case rim. Some do and you have to fix that. Defiance extractors need a layer or 2 of tape under them to get then to stop dragging. You also need a straight round, one with a lot of runout will drag in the freebore and you will get false readings. A little effort on the reloaders part and you will get touch numbers to repeat better than .001". And for my customers I especially recommend this, because when I say to start .020 off the lands you will actually be .020 off the lands. With other methods like the Hornady tool your going to be .005-.010 closer to the lands because your pushing the bullet into the rifling more than you think. [/QUOTE]
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Reloading
Measuring CBTO - What is wrong with my approach?
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