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Rifles, Reloading, Optics, Equipment
Reloading
Best method to measure headspace?
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<blockquote data-quote="QuietTexan" data-source="post: 2994240" data-attributes="member: 116181"><p>Yes, each separate Hornady comparator body is labeled with a letter then three digits. The letter is just a code for quick reference, the numbers are notionally the size of the hole in thousandths.</p><p></p><p>But what Phil is saying (I think, tell me if I'm wrong buddy <img class="smilie smilie--emoji" loading="lazy" alt="🤣" title="Rolling on the floor laughing :rofl:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f923.png" data-shortname=":rofl:" />) is you need to use the same body each time - don't ever substitute a new "A" body for an old "A" body. Hornady has a history of making oblong holes and two different comparator bodies with the same stamp on them will potentially take different measurements if the holes are even slightly different sizes. If you take the chamber measurements with one and set up the die with another, the difference between the two bodies will get baked in to your die setting and you won't be doing what you think you're doing.</p><p></p><p>Same logic behind why each of my die sets has a shellholder in the box with the dies - they're set on one particular press, with one particular shell holder, and I use the same pairing every time so as not to introduce a new variable. At this point I own at least a dozen #1s if not two dozen, because that way I always use the one that was used to set up that particular set of dies. I don't use the same #1 for 308, 30-06, 243, etc.</p><p></p><p></p><p>[ATTACH=full]528630[/ATTACH]</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2994240, member: 116181"] Yes, each separate Hornady comparator body is labeled with a letter then three digits. The letter is just a code for quick reference, the numbers are notionally the size of the hole in thousandths. But what Phil is saying (I think, tell me if I'm wrong buddy 🤣) is you need to use the same body each time - don't ever substitute a new "A" body for an old "A" body. Hornady has a history of making oblong holes and two different comparator bodies with the same stamp on them will potentially take different measurements if the holes are even slightly different sizes. If you take the chamber measurements with one and set up the die with another, the difference between the two bodies will get baked in to your die setting and you won't be doing what you think you're doing. Same logic behind why each of my die sets has a shellholder in the box with the dies - they're set on one particular press, with one particular shell holder, and I use the same pairing every time so as not to introduce a new variable. At this point I own at least a dozen #1s if not two dozen, because that way I always use the one that was used to set up that particular set of dies. I don't use the same #1 for 308, 30-06, 243, etc. [ATTACH type="full" alt="3d0af4c4-282c-4a05-9b15-0a5577fc77d4._CR0,0,970,300_PT0_SX970__.png"]528630[/ATTACH] [/QUOTE]
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Best method to measure headspace?
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