190grSMK/Re22 in .300WSM advice requested

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by RuffHewn, Oct 12, 2003.

  1. RuffHewn

    RuffHewn Well-Known Member

    Messages:
    99
    Joined:
    May 14, 2003
    Chronograph died in it's sleep over the past few months, while my rifle was being rebarreled. I need a charge range to work up to while I research a suitable replacement. Any suggestions would be appreciated.

    My goal is 2950-2990 fps from my 26" barrel.

    My new Mike Rock barrel seems to really like Re22 as every load with the exception of starting charge have been sub .5 moa. Last load tested was 67.0 gr with no pressure on primer and case miked .552".

    My new barrel has no freebore and 2.864" COL with the SMK190 is to the lands. My last barrel was set up for Barnes X so I could seat the SMKs to 2.96" COL.

    Please post if your data is for plain or molyed 190s.

    Thanks for any help.
     
  2. MontanaMarine

    MontanaMarine Well-Known Member

    Messages:
    324
    Joined:
    Dec 4, 2001
    Nosler #5 shows the following MAXIMUM loads for RL22 in the 300WSM, 26" 1-10twist barrel:

    180gr bullets:
    69gr, 3057fps

    200gr bullets:
    67gr, 2944fps

    MM
     

  3. RuffHewn

    RuffHewn Well-Known Member

    Messages:
    99
    Joined:
    May 14, 2003
    Thanks, Montana Marine. The Nosler data is close to the 68.5 gr a Sierra tech suggested for the molyed MK190s I shoot.

    Semper Fi
     
  4. MontanaMarine

    MontanaMarine Well-Known Member

    Messages:
    324
    Joined:
    Dec 4, 2001
    Ruff,

    I'm guessing you will have no trouble reaching or exceeding your velocity goal. I shoot the 190SMK moly in my 26" 30-06. 62gr RL22 yields avg 2907 fps. Accuracy consistently sub MOA.

    Semper Fi! MM