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Going under minimum

Discussion in 'Handloading and Reloading' started by Captain FU, Feb 14, 2010.

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  1. Captain FU

    Captain FU Member

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    More new-guy questions!

    I just loaded my first 15 .223 rounds. Hodgdon H335 shows 24gr as the starting load with 50gr bullets. I loaded 5 at the given start charge, and 5 at .5gr under and over that given start charge.

    The 23.5gr shot better than the others.

    My question is do I dare go any further under the start charge seeking better results or is a lighter/heavier bullet the way to go?

    50gr Nosler
    H335
    CCI 400 primers
    Winchester brass

    Ruger M77 MKII 1:12 rifling.

    Thanks again
     
  2. Sunray

    Sunray Member

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    Loading under minimum is just as dangerous as loading over max. Causes weird pressures. The powder can actually detonate as opposed to burning. Mind you, a half grain under won't detonate. However, don't work down. Work up in half grain increments to the max load.
    Ruger's site shows a Mk II .223 as having 1 in 9 rifling. Your's an older rifle? 1 in 9 is good for heavy bullets. 55 grains and up.
     
  3. Captain FU

    Captain FU Member

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    I would have sworn it was 1:12.

    I quick check with the cleaning rod is in order.

    It is a 1:12
     
    Last edited: Feb 14, 2010
  4. Sunray

    Sunray Member

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    It might well be. I just had a look at their site. Says 1 in 9 for all their .223 bolt action rifles. Not a big deal either way. The faster twist does let you use heavy bullets. Better for long range shooting.
    Depends on what you're using your rifle for. A varmint won't care what bullet weight kills it. Bit different for target shooting.
     
  5. Captain FU

    Captain FU Member

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    I am trying to reload for targets
     
  6. Sunray

    Sunray Member

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    77 grain Sierra Matchkings or 75 grain Hornady A-Max bullets, if you're loading for match shooting. Neither will be cheap. Any like bullet weight bullet will do for fun target shooting. Match bullets do make a difference though. Pick a bullet and do this.
    Beginning with the starting load given in your manual, load 4 rounds only(mag capacity). Go up by half a grain of powder, loading 4 of each keeping them separate until you get to the max load in your manual.
    Then go shooting. Shoot at 100 yards, for group only, slowly and deliberately off a bench.
    Change targets between strings of 4 and allow time for the barrel to cool.
    When you find the best group, sight in.
     
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