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Rifles, Reloading, Optics, Equipment
Gunsmithing
Full Length Sizer Boring
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<blockquote data-quote="Trickymissfit" data-source="post: 797123" data-attributes="member: 25383"><p>Remember you can buy A2 in drill rod, and that puts you ahead of the game from the start. Before buying any, I'd check to see if my heat treater was setup to do air hardening steels. Most are. I used to have an in with a major heat treater that could do it all in vacume furnaces, and he'd do my high speed steels for a six pack of beer if I wasn't in a big hurry (never are). A die just dosn't have to rockwell at 62 contary to popular beliefe. Even 55rc will do nicely. </p><p> </p><p>I almost always setup with a standard type cobalt drill to get a hole thru it with a spray mist coolant setup. Then I cleaned up the drilled hole with a carbide boring bar. After that (believe it or not) I went in there with a four flute core drill to get the bore within about .025". Cleaned it up once more and reamed it. I'm sure there are better ways, but that always worked well for me. </p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 797123, member: 25383"] Remember you can buy A2 in drill rod, and that puts you ahead of the game from the start. Before buying any, I'd check to see if my heat treater was setup to do air hardening steels. Most are. I used to have an in with a major heat treater that could do it all in vacume furnaces, and he'd do my high speed steels for a six pack of beer if I wasn't in a big hurry (never are). A die just dosn't have to rockwell at 62 contary to popular beliefe. Even 55rc will do nicely. I almost always setup with a standard type cobalt drill to get a hole thru it with a spray mist coolant setup. Then I cleaned up the drilled hole with a carbide boring bar. After that (believe it or not) I went in there with a four flute core drill to get the bore within about .025". Cleaned it up once more and reamed it. I'm sure there are better ways, but that always worked well for me. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Full Length Sizer Boring
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