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Aligning recipes with components

Discussion in 'Handloading and Reloading' started by smurf hunter, Jul 29, 2010.

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  1. smurf hunter

    smurf hunter Member

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    Hi,

    So I'm looking to lower the cost of my plinking and practice rounds, and am seriously considering some cast bullets for my GP100. Per unit they are 1/2 the cost of Hornady JHP bullets. Problem is I don't see recipes for the powder I have and those cast bullets.

    I suppose I can buy some more traditional powder that is published for cast bullets, but it'd be nice to have some flexibility.

    For example, I've got the Lyman 49th ed. manual. Great book, but it does not contain data for Winchester AutoComp powder. Luckily hodgdon.com does list that powder - but it has a more limited set of projectiles listed.

    Thoughts?
     
  2. 243winxb

    243winxb Member

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    What caliber? 327 or 357 ? Using powders you already have is not always the best way to go. For 357mag, a standard load for a 158gr lswc is Alliant 2400 - 13.0gr. Your choice of std or mag. primers.
    357 mag.> 3 lead bullets, not bad. Go with the 158gr. start at 5.0gr of AutoComp and work up to max. Its a place to start.
     
    Last edited: Jul 29, 2010
  3. l3uster

    l3uster Member

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    38 or 357?

    Bottom of this page has some AutoComp 38spl loads with cast bullets.
     
  4. jcwit

    jcwit Member

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    I would use data for jacketed bullets with a weight and bearing area as close as I could get in lead. Also start at low biging charges. Folks may flame me for this, but this is what I would do.

    Don't start out at max loads.
     
  5. Sidewinder72

    Sidewinder72 Member

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    I would buy some W 231 and load per manuals on cast bullets, not jacketed. Lots of load data for W 231. Play it safe.
     
  6. jcwit

    jcwit Member

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    Not to argue, but why? Its easier to start a lead bullet with the same weight & bearing length than a jacketed bullet. I've done this for years in various calibers when unable to find data for a certain powder.

    Please explain.
     
  7. smurf hunter

    smurf hunter Member

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    357 is my preferred reload, though I have some 38spl brass I've experimented with. In a GP100 I'm generally not afraid of a hot 38spl load.

    Suppose I have in possession 158gr lead bullets - let's say LSWC

    When a recipe calls for the same weight, but different bullet (158gr JHP, 158gr LRN, etc.) - what will work and what will not work?

    factors I can think of:

    1) bearing surface
    2) bearing material
    3) gas checked/jacketed at the base

    I'm mainly concerned about safety and basic functionality. I'm not concerned about losing a little velocity compared to what the recipe stated.
     
  8. jcwit

    jcwit Member

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    Start on the light end and work up. I see no problem. Watch for pressure signs.

    You've got a strong revolver there.
     
  9. Gadzooks Mike

    Gadzooks Mike Member

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    I agree with jcwit. As long as you're starting on the low end, there is absolutely no problem.
     
  10. bds

    bds Member

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    Someone suggested loading 357 cases with 38 bullets and powder charges to minimize fouling in the cylinder. ;)
     
  11. 243winxb

    243winxb Member

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    What cast bullets do you have, that you want to work up a load with, using the Winchester AutoComp powder?
     
  12. jcwit

    jcwit Member

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    Thats what was implied in the first post.

    I usually do this with .357, keeps from having the carbon rings in the cylinders.
     
  13. Walkalong

    Walkalong Moderator

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    I always use .357 cases for light .38 type loads in .357 revolvers. Nothing wrong with shooting .38 cases in them, but that is just how I do it. Some of my "medium" .357 loads are more in the .38 +P and more range, so I would rather they were in .357 cases to keep them out of .38's.
     
  14. smurf hunter

    smurf hunter Member

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  15. ljnowell

    ljnowell Member

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    Smurf, I run the 158gr SWC from Missouri Bullet over 14.5gr of 2400. Very accurate and powerful, and well within SAAMI spec.
     
  16. 243winxb

    243winxb Member

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    Simple- 158gr lead. Start 5gr AutoCom in 357mag.

    So then, what the :cuss: is the problem. Buy a bullet that Hodgdon has data for, 158gr lead, lead is lead, RN, SWC or WC, using your powder(AutoComp)
    < As i said before :cuss:
     
  17. Steve C

    Steve C Member

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    Charge weights being equal a lead bullet will produce a higher velocity than a jacketed bullet. Depending upon bullet hardness, size and the particular bore and throat sizes of your revolver, this can produce mild to severe leading in your bore.

    Its usually easy to find lead bullet data but if using jacketed data it would be best to begin at a 20% reduction from maximum as a start load for lead and consider the jacketed start load to be maximum. My chrono results show that the start load (-10%) in jacketed data will produce velocities equal to a full power jacketed bullet when using lead. Main reason for this is that lead has less bullet to bore resistance than a jacketed bullet so it slides down the bore easier.

    The one caveat is H110/W296 where you will not be able to reduce the load less than 3% below maximum without risking squibs.

    Since you can't predict if you will have leading issues its best to find lead data for your powder or buy a different more appropriate one and work up your loads rather than just arbitrarily picking a load.

    Loading lead takes a more load development to get it right but when you find a load that works for you it will save money and be quite rewarding.
     
  18. smurf hunter

    smurf hunter Member

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    Thank you Steve.
     
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