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  1. A

    Bartlein New Barrel Material 400MODBB

    For what its worth, I made molds for the space walk life support systems and molds for the nose and wings of the shuttle tiles. Engineers told me they are replaced after each flight at about 3million per shot. When we get a ceramic lined barrel, I would surely pay 10G for it. 98 % of the heat...
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    Bartlein New Barrel Material 400MODBB

    An infused ceramic matrix is next. It's being done on exposed optical surfaces now. Inside a barrel poses a lot of problems to overcome. Maybe another 5 or 10 years.
  3. A

    Monolithic solid projectiles in polygonal rifling

    Actually, Flat Lines need more powder to get to velocity with the same weight pill because os reduced bearing surface. Similar to using moly.
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    Monolithic solid projectiles in polygonal rifling

    What Theis said. Talk to David. He has a lot of experience with poly barrels. IIRC, he told me he saw higher velocities with Polys @ same charge amount than 4 groove or 5rs.
  5. A

    37XC build

    Most likely because 15 over ambient put you over what the brass will withstand. Work hardening at the bottom limits sizing via springback. The only way to try to reclaim that brass is push thru die to sweage the base diameter back to as new Sometimes that works, sometimes not Your extractor...
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    37XC build

    Jason Your brass is fatigued. Start over with new stuff I'm experimenting with the same condition with Barrett brass . Most of what I,m seeing is a lot of guys are running at the top or over to obtain velocities. Not good. Just made up 12 pieces RWS into 416 Barrett to see what shakes out...
  7. A

    SCOOOOOOOOOORRRRRREEEEE!!!!

    And when it shits the bed, your rifleman skills go out the widow. Know our dope. One EMT and all you guy who rely on electronic commo are fucked.
  8. A

    USPS issues

    Ditto from the north east also.
  9. A

    375 Mercenary

    When you have a reamer drawing, there is no excuse for making brass that does not fit the chamber.
  10. A

    Warren Tool Die

    I made it so as to be able to handle brass up to 20mm. Alan
  11. A

    Warren Tool Die

    Let's see if I can clear up and better define the features and limitations of our dies First, there are three basic sizes in the series. The standard die uses .7500 diameter inserts and is limited to a 30-06 In length. The magnum series uses .8750 diameter inserts and is limited...
  12. A

    Accuracy Int'l Coopermatch

    I never heard what transpired with Mac,s collection of stuff. Maybe John knows more. He was a honorable and always jovial man.
  13. A

    Maggie’s SH Motorcycle Thread

    Anyone here had a ride on the new Beemer B18? I'm looking for what it may be on long hauls. Seems a bit restrictive on peg and board options. Thanks.
  14. A

    Accuracy Int'l Coopermatch

    Mac passed a couple years ago. John Whidden took on Barnard from Mac. I connected Barnard with Mac back in 95/96. First Barnard to the states was by me in 95. I have no idea whatever became of Mac's extensive collection of some really unique and interesting small bore rifles and such.
  15. A

    Left Hand Sale WTS: Bat ex left, left

    New ex, bmg face, left bolt, left port. No ejector. Fluted bolt. Spare extractor, plunger and spring. 2500 to your ffl. Thanks Alan
  16. A

    Gunsmithing Custom cutter

    AB Tools out of California. Any tool you can design, carbide and 3 to 7 days. What you are looking for might run $80 Find their web site. Enjoy. Alan
  17. A

    Anni Annealer questions. users I need your help

    I have both the std. And 50 cal size Annie. Radiator cooling and coil systems. I made a height adjustable, spring loaded platform and mounted the Annie on a riser on my bench. Load/unload is 2 to 3 seconds. Times can vary a lot depending on brand and or alloy. 6 br is maybe 3 sec., 50...
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    Adjustable bases?

    This system is a precise sine. bar mechanism with positive pin location at 0, 30, 60 90 and 120 minutes with a lock for each position. Repeatability is better than .005degrees at any location. Pin fit is less than .0002 clearance. I've designed and fab'ed for Barnard GP , JJ Rock and Bat EX so...
  19. A

    What's your take on this

    Weight means nothing. It's the volume that counts when the outside measures the same.
  20. A

    Virginia Public Safety Assault Ban Squad

    Just so you all know, I'm a direct descendant of Eli Whitney. I'm also related to Seth Warner of the Green Mountain Boys. A long line of freedom fighters. Live free or die
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