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Rifles, Reloading, Optics, Equipment
Reloading
280 AI modified cases for Hornady/Stoney pt. tool
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<blockquote data-quote="fj40mojo" data-source="post: 380638" data-attributes="member: 19129"><p>5/16-24 thread Tap Drill would be a Size 1, but double check, this is second hand info as I don't personally own the L-N-L OAL gauge. If in doubt find a machinist in your area and take your tool to him/her and have the thread pitch checked. You can get the nominal size by measuring the major diameter of the thread with a set of dial calipers, 0.3125=5/16. Set your calipers at .250" and count the number of complete threads that fall between the jaws, 6 complete threads would compute to 24 TPI or set at 0.125" should be 3 complete threads.</p></blockquote><p></p>
[QUOTE="fj40mojo, post: 380638, member: 19129"] 5/16-24 thread Tap Drill would be a Size 1, but double check, this is second hand info as I don't personally own the L-N-L OAL gauge. If in doubt find a machinist in your area and take your tool to him/her and have the thread pitch checked. You can get the nominal size by measuring the major diameter of the thread with a set of dial calipers, 0.3125=5/16. Set your calipers at .250" and count the number of complete threads that fall between the jaws, 6 complete threads would compute to 24 TPI or set at 0.125" should be 3 complete threads. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
280 AI modified cases for Hornady/Stoney pt. tool
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