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Rifles, Reloading, Optics, Equipment
Gunsmithing
CZ 550 and CZ 550 Magnum
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<blockquote data-quote="Hired Gun" data-source="post: 1075662" data-attributes="member: 1290"><p>Before I knew better I used to worry about tennon blueprints but not knowing the history of the action plus factory variances I have found it best to treat every rifle as an individual and draw up a print for it from my own measurements. This way you can get the thread fit as tight as possible. It's the mark of a pro to have it fit like a micrometer spindle from the first thread forward. This is one thing we can bring to the table that a CNC machined barrel has a very hard time doing. We can also custom tailor the operating clearances for the intended application. </p><p> </p><p>For an action wrench I use the bolt as a rough pattern and make a Holland style wrench for it out of tool steel. Here is one I built for the Stiller 1.6" actions we use to build our 338 CT Max and 375 Chey Tacs on next to a real Holland 700 wrench. It's been to 200 foot pounds in a test. No perceptible twist observed.</p><p> </p><p><a href="https://imageshack.com/i/p7YLHPQ7j" target="_blank"><img src="http://imagizer.imageshack.us/v2/640x480q90/907/YLHPQ7.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="Hired Gun, post: 1075662, member: 1290"] Before I knew better I used to worry about tennon blueprints but not knowing the history of the action plus factory variances I have found it best to treat every rifle as an individual and draw up a print for it from my own measurements. This way you can get the thread fit as tight as possible. It's the mark of a pro to have it fit like a micrometer spindle from the first thread forward. This is one thing we can bring to the table that a CNC machined barrel has a very hard time doing. We can also custom tailor the operating clearances for the intended application. For an action wrench I use the bolt as a rough pattern and make a Holland style wrench for it out of tool steel. Here is one I built for the Stiller 1.6" actions we use to build our 338 CT Max and 375 Chey Tacs on next to a real Holland 700 wrench. It's been to 200 foot pounds in a test. No perceptible twist observed. [URL="https://imageshack.com/i/p7YLHPQ7j"][IMG]http://imagizer.imageshack.us/v2/640x480q90/907/YLHPQ7.jpg[/IMG][/URL] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
CZ 550 and CZ 550 Magnum
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