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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
over sized bullets?
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<blockquote data-quote="DANTEC" data-source="post: 28632" data-attributes="member: 685"><p>miltary jacquet are not in copper but in brass </p><p></p><p>hardness of brass can be close to the hardness of bronze depend what quality you use and heat treatement , pay special attention in bronze quality because as bullet raw material only use lead bronze ( bronze for bearing ) and avoid nickel bronze , aluminium bronze and phosphorous bronze they are far to tought for the grooves and you just sucess to smash the barrel grooves quick and some make easy galling in barrel .</p><p></p><p>Copper pure is nice but very difficult to machine clean .</p><p></p><p>try to copy some design as Groovebullet for drive band , they are copy of GScustom bullet so ..., this design is very sweet for pressure .</p><p></p><p>I turn my long range .50 cal in bronze and I use tight tolerance (as 0.015 millimeter on diameter )</p><p></p><p>on solid bullet moly coating help a lot for easy engraving</p><p></p><p>you shoot 50 cal in California ? </p><p></p><p>good shooting</p><p></p><p>DAN TEC</p></blockquote><p></p>
[QUOTE="DANTEC, post: 28632, member: 685"] miltary jacquet are not in copper but in brass hardness of brass can be close to the hardness of bronze depend what quality you use and heat treatement , pay special attention in bronze quality because as bullet raw material only use lead bronze ( bronze for bearing ) and avoid nickel bronze , aluminium bronze and phosphorous bronze they are far to tought for the grooves and you just sucess to smash the barrel grooves quick and some make easy galling in barrel . Copper pure is nice but very difficult to machine clean . try to copy some design as Groovebullet for drive band , they are copy of GScustom bullet so ..., this design is very sweet for pressure . I turn my long range .50 cal in bronze and I use tight tolerance (as 0.015 millimeter on diameter ) on solid bullet moly coating help a lot for easy engraving you shoot 50 cal in California ? good shooting DAN TEC [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
over sized bullets?
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