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  1. Thumper580

    WHY????? Mag feed vs. Hand feed

    1. Not sure I get the question but it's straight up and down...level. Insert mag and push bolt release. 2. Typically 5 rounds for load development. 3. Tubb flat wire spring and a 9oz. heavy buffer to increase dwell time prior to extraction. Much easier on the case rim.. Barely feel any extractor...
  2. Thumper580

    WHY????? Mag feed vs. Hand feed

    I thought the same thing. Didn't shoot several... Only one more 5 shot group, single feed.... It measured 0.176...
  3. Thumper580

    WHY????? Mag feed vs. Hand feed

    I have a JP high pressure bolt. It has a rounded ejector.
  4. Thumper580

    Maggie’s Motivational Pic Thread v2.0 - - New Rules - See Post #1

    Can someone explain this to me...... What the hell are the Indians and Paki's doing when they are strutting around like peacocks kicking their legs in the air????? Is that how they say "fuck off" or something????
  5. Thumper580

    WHY????? Mag feed vs. Hand feed

    I'm not speed shooting it... Taking time between shots. For the reply about it being a semi auto, we obviously think differently. If this was a muzzle loader I'd be doing the exact same thing... How accurate can I get the weapon to shoot.... Not just make noise.
  6. Thumper580

    WHY????? Mag feed vs. Hand feed

    Typical 308 powders... IMR4064, IMR4895 and this group in the photo was Varget....
  7. Thumper580

    WHY????? Mag feed vs. Hand feed

    It's glued in, per Craddocks direction.
  8. Thumper580

    WHY????? Mag feed vs. Hand feed

    Craddock just made the barrel and headspaced the JP bolt to it.
  9. Thumper580

    WHY????? Mag feed vs. Hand feed

    Already sent the barrel back.... No issues found. Can't see it's anything with the barrel since it shot a 0.147" group single feeding it. I have to conclude that the rifle is accurate, my loads are accurate and I can shoot it accurately.... But something is happening during the BCG cycling that...
  10. Thumper580

    WHY????? Mag feed vs. Hand feed

    Yep.... Magpul and a $90.00 Larue... No difference.
  11. Thumper580

    WHY????? Mag feed vs. Hand feed

    I'll check....but I'd hope that for $760.00 Craddock Precision would have done this.... but I'll check.
  12. Thumper580

    Times Square Touts New Statue Of 12-Foot-Tall Black woman

    Why???? Just why.
  13. Thumper580

    WHY????? Mag feed vs. Hand feed

    I've tested different neck tensions with SAC bushings and expander mandrels from loose to tight. Makes no difference. The brass comes out like it was shot out of a bolt gun. Barely even feel or see anything on the case rim.
  14. Thumper580

    WHY????? Mag feed vs. Hand feed

    I've been shooting AR's for 30 years, have built a ton of them. My target AR15 (223) shoots 3/8", 100 yard groups pretty easily and consistently from the magazine. Built another AR10 308 with top tier products... because I'm pigheaded and won't give up. Matched AERO upper and lower Nightforce...
  15. Thumper580

    jp supermatch heavy contour

    Paul Ross just finished an AR15 heavy barrel for me, from a Krieger blank. Beautiful work..... and it shoots great.
  16. Thumper580

    Optics Zero Compromise Optic ZC527 in OD Green Limited Edition in stock at cstactical.com

    I know... Having paid for the XRAY-51 funds are a bit tight, but I'm not giving up.... ;)
  17. Thumper580

    Optics Zero Compromise Optic ZC527 in OD Green Limited Edition in stock at cstactical.com

    I have an XRAY-51. I'm dying over that OD Green scope.... Would look so badass.
  18. Thumper580

    I Couldn't Care Less About Cinco De Mayo! Ban It!

    My wedding anniversary. Wife and I have been married 46 years....
  19. Thumper580

    Powder IN-STOCK thread

    Anyone seen IMR4895 anywhere??? Thanks.
  20. Thumper580

    Geometry question.... Angular movement

    Thanks guys....
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