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Rifles, Reloading, Optics, Equipment
Reloading
Hornady OAL Gauge Modified Cases?
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<blockquote data-quote="Garycrow" data-source="post: 1104025" data-attributes="member: 30743"><p>I have the tap but to be honest I just buy the modified cases any more. Using the tap is a PITA because I haven't found a good way to hold the case while drilling out the base. I've made it work by clamping them into a block of wood with a hole in it but it doesn't work well. </p><p></p><p>The measurements you get from the tool aren't precise enough anyway for the difference in headspace to make a difference. You're only going to get about a +/- .004" tolerance and that's more than the headspace dimensions. Anyone that tells you they're .002" off the lands is BS'ing you, a minute difference in pressure on the bullet will give different readings as the copper engraves the lands. The Hornady tool is great because it gets you near the lands so you can fine tune by actual shooting, but to claim absolute precision from it stretching it. If you're off by .006" because of the headspace due to a new vs. once fired case it's not going to make a bit of difference because you've got to tune it by shooting anyway. Anybody that has used them knows there's a bit of "slop" involved.</p></blockquote><p></p>
[QUOTE="Garycrow, post: 1104025, member: 30743"] I have the tap but to be honest I just buy the modified cases any more. Using the tap is a PITA because I haven't found a good way to hold the case while drilling out the base. I've made it work by clamping them into a block of wood with a hole in it but it doesn't work well. The measurements you get from the tool aren't precise enough anyway for the difference in headspace to make a difference. You're only going to get about a +/- .004" tolerance and that's more than the headspace dimensions. Anyone that tells you they're .002" off the lands is BS'ing you, a minute difference in pressure on the bullet will give different readings as the copper engraves the lands. The Hornady tool is great because it gets you near the lands so you can fine tune by actual shooting, but to claim absolute precision from it stretching it. If you're off by .006" because of the headspace due to a new vs. once fired case it's not going to make a bit of difference because you've got to tune it by shooting anyway. Anybody that has used them knows there's a bit of "slop" involved. [/QUOTE]
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Hornady OAL Gauge Modified Cases?
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