Reloading .303 Looking for O.A.L.

Discussion in 'The Ammo & Reloading Forum' started by Native, Nov 8, 2011.

  1. Native

    Native New Member

    Jan 9, 2010
    Las Vegas
    Trying to find information to load British .303 using Sierra 150 Gr. .311 Spitzer Bullet want to know the O.A. L for it ?. Help, Using 4064 Powder
  2. mikld

    mikld Well-Known Member

    Jun 24, 2009
    Last edited: Nov 8, 2011

  3. Bindernut

    Bindernut Well-Known Member

    Oct 24, 2007
    ND, USA
    From the Sierra 5th Ed manual:
    150gr SPT
    COAL 3.075"
    I can cross-reference data from the Sierra manual for you if you post up what powder you're using.
    My recommendation would be IMR4064, but IMR4895 or Varget would be good alternates.

    Not sure what powder or what manual you're using for loading data but the Hodgdon online data center has data for the Hornady 150gr.

    The max COAL for the .303 is 3.075"...this is a general COAL measurement for magazine functioning, not because the bullet contacts the rifling. Anything longer than that and you'll have feeding problems from the magazine. You will have to seat a lot farther out to get a spitzer type bullet to contact the lands since the SMLEs have a rather long leade for the older 174gr bullet loadings which does have a longer profile than the 150gr bullets available.
  4. Bindernut

    Bindernut Well-Known Member

    Oct 24, 2007
    ND, USA
    Okay, I missed that you're using IMR4064...

    From the Sierra 5th Ed:
    #2300 .311" 150gr SPT 3.075"

    38.0 - 2300fps
    39.6 - 2400fps
    41.2 - 2500fps
    42.8 - 2600fps
    43.6 - 2650fps
    44.1 - 2700fps MAX Load
  5. Native

    Native New Member

    Jan 9, 2010
    Las Vegas
    New Sierra Loading books do not list this bullet or should I say they do not list it on thier web sight.
  6. res45

    res45 Member

    Sep 21, 2007
    Call Sierra customer service they will tell you anything you want to know about load data. In fact any component mfg. or company that has a reloading manual will do the same many of them send you a PDF file or scan of the data to go along with it.

    By the way good bullet I shoot it in my 54r when I shoot J bullets.
    Last edited: Nov 9, 2011
  7. Bindernut

    Bindernut Well-Known Member

    Oct 24, 2007
    ND, USA
    The #2300 150gr SPT is still listed on their website.
    It's under the Pro-Hunter line between the #2305 and #2310 125gr and 180gr .311"s.

    I have the 5th Edition Sierra, which although it's a little dated (2003) it is their current manual.
    I've been waiting for #6 to arrive but I haven't seen anything definite in the Sierra newsletters about a release date yet.
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