Recent content by RABAZ

  1. R

    Ballistic solver app help

    Ballistic AE works for me, and validate it w Hornady 4 DOF. Hope helps.
  2. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    I seem to have gotten it to work ok by, as several of you have suggested, dialing back my powder charges - it’s like magic!! Thanks for the help and input.
  3. R

    Barrel Harmonics Testing

    Hah! I knew my golf club building and rifle shooting would converge someday!!
  4. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    Thanks for info; really for ALL of you who have responded. Very much appreciated!
  5. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    I will do so - love to soak up that info.
  6. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    Thanks for the info and the offer. Let me try a couple things first and see how that works. Will advise. Not sure how to tell if your gas block will fit - I’ve got a heavy 22” barrel from Moriarti - I’ll ck diameter of existing block.
  7. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    Thanks - I do hand load. I’ll back it off a bit and see if it gets happier!
  8. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    no adjustable gas block - maybe that's the fix....
  9. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    hmmm - i think the 308 goes slightly backward, say, to 4 o'clock; while the 6.5CM goes forward at 2 o'clock, if barrell is 12 o'clock.
  10. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    with the 6.5CM: either failure to fully lock into battery, or failure to eject properly and getting jammed w subsequent round. Also, sometimes is prone to not locking back w an empty mag.
  11. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    Nope - 2 sep BCGs purchased with and supposedly specific to the uppers
  12. R

    AR10 - can 6.5CM and 308Win uppers use same lower (buffer/spring)?

    built an AR10 last year, and have 2 uppers - 308win and 6.5CM. probably only have a hundred rounds or so through each upper. 308win upper cycles pretty reliably, but more trouble with jamming on the 6.5CM upper. question - am I trying to do something that won't work (i.e. - common lower...
  13. R

    Why excessive runout on some rounds?

    How much the bullet is “crooked” in the case.
  14. R

    Why excessive runout on some rounds?

    PPU brass - I keep brass grouped by # of loadings. FL sizing only, bumping shoulders a couple thou. Trim all same length. Haven’t checked both at bullet tip and case mouth. Will do. I do rotate cases and “seat” 3 times.
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