6BR- Ackley Improved 40 degree

Discussion in '6BR, 6BR Improved & Wildcats' started by HUNTER3401, Sep 25, 2015.

  1. AlloyTargets

    AlloyTargets Site $$ Sponsor

    Joined:
    Feb 24, 2013
    Messages:
    376
    About 150 rounds. What velocity does 32.3/ 205 get you?

    32.3 is where I plan to load my next 30 or so and start playing with seating depth at 400-ish. 32.4 was getting a little stout. Primers cratering a little but still has nice round edges, bolt was easy to open, no clicks, etc. If I can't run em off quickly, I'm not interested. It's probably worth noting that the EPS 106 has a rather long bearing surface. To be within a few FPS of the documented sweet spot of 2,985-2,990 makes sense.
     
  2. tclaunch

    tclaunch Silver $$ Contributor

    Joined:
    Jan 22, 2009
    Messages:
    1,253
    Great news, just got the call from JGS, BR-AI reamer is on the way!!
     
    dedeadeye and boltfluter like this.
  3. johara1

    johara1

    Joined:
    May 16, 2008
    Messages:
    3,259
    You may pick up some speed in a little. The record LG. shot at Williamsport was with RL-15 and Maybe Roger would let you know about the speed, I'm only using a 26" right now and it hurts a lot in speed for those couple of inches. With H4895 the short barrel gets 2974 with 31.1 gr. and a 205 primer....... Jim
     
  4. Alex Wheeler

    Alex Wheeler Gold $$ Contributor

    Joined:
    Feb 5, 2011
    Messages:
    4,178
    I am guessing that 106 has a lot of bearing surface, which is part of the speed issue. 32.2-32.3 of rl15 is about right. I always preferred a 450 primer with 15. I have chambered so many of these lately my reamer is getting dull, lol. I bet its pushing 30 chambers and everyone that has given me feedback is in that 2980 fps range. Just got a carbide version of that reamer in that cuts a chamber that looks like a mirror finish, same with the throat.
     
    swd likes this.
  5. AlloyTargets

    AlloyTargets Site $$ Sponsor

    Joined:
    Feb 24, 2013
    Messages:
    376
    Don't get me wrong. I don't think I have an issue. Just sharing what I've found. 2,980 is practically there. And you are correct about bearing surface
     
  6. waybones

    waybones

    Joined:
    Mar 16, 2014
    Messages:
    8
    What is your COAL for the 106 EPS?
     
  7. AlloyTargets

    AlloyTargets Site $$ Sponsor

    Joined:
    Feb 24, 2013
    Messages:
    376
    2.36"-ish
     
  8. Pappy42

    Pappy42 Silver $$ Contributor

    Joined:
    Aug 15, 2013
    Messages:
    295
    Can I just turn 80 thousands off of my 6 Dasher sizing die and use it for both Dasher and BRA? My sizing die is full length sizer with neck bushings.

    Also, will I be able to use my Wilson arbor press type seater for the BRA?
     
  9. BJ44BJ

    BJ44BJ Silver $$ Contributor

    Joined:
    Aug 29, 2006
    Messages:
    125
    You could do this but I wouldn't recommend it. You won't be resizing the base of the dasher case using a 6BRAI resize die. You can use a dasher seater for the 6brai but the case will be somewhat loose in the die. That's my 2 cents.
     
  10. swd

    swd Gold $$ Contributor

    Joined:
    Nov 25, 2008
    Messages:
    1,308
    It really depends on your Dasher chamber. If your back end of your Dasher cases don't expand much, then yes. Measure a fired case at the .200" line and then size it and remeasure it. Then you'll know.
     
    Pappy42 likes this.
  11. jsthntn247

    jsthntn247 Silver $$ Contributor

    Joined:
    Mar 9, 2010
    Messages:
    1,372
    What's the BC for the EPS 106?
     
  12. Rushty

    Rushty Gold $$ Contributor

    Joined:
    Nov 28, 2013
    Messages:
    126
    For the guys using a standard 6 Dasher seating die for BRA are you still finding it sufficient to use as is or have you or are you considering trimming .80" like FL die?

    Cheers Rushty
     
  13. birdog

    birdog Gold $$ Contributor

    Joined:
    Jan 30, 2007
    Messages:
    719
    Good news
     
  14. DBLNUT

    DBLNUT

    Joined:
    Aug 14, 2007
    Messages:
    59
    I received this from Jamie when I bought some.


    I had them tested unpointed years ago at .569 @3000 fps so if you are shooting them slower it will be closer to. 550
     
    jsthntn247 likes this.

Share This Page