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45 gap

Discussion in 'Reloading' started by Melissa5, Jan 11, 2012.

  1. Melissa5

    Melissa5

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    Hi! I just picked up a G37 for use in GSSF matches and want to reload for it. The problem is that I want to use Unique and I'm having a problem finding load data. I did find a recipe on the Alliant site, but it was for 200 gr GDHP http://www.alliantpowder.com/reload...=1&weight=200&shellid=34&bulletid=60&bdid=177. Would that also be good for my chosen bullet or would I have to adjust the charge? Sorry to be such a newbie.
     
  2. PCJim

    PCJim Senior Member

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    Melissa, it would seem you did not carefully read the preamble to Alliant's reloading data. You did read the warning that the stated charges listed are max charges for the components and testing apparatus used?

    You did not state your "chosen bullet". Bullet weight, composition and sometimes profile all require consideration before a charge weight and/or COL can be determined. Your reloading books will have taught this, and would have stated that you always work up a charge from the minimum charge stated for a specific bullet weight/type/profile.

    Not trying to bust your chops, but the information provided was really vague and leads one to believe you haven't done your part before coming here.
     


  3. Melissa5

    Melissa5

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    LOL! I TOLD you I was a newbie. So far, I haven't had to work up any loads since I have been able to find recipes in my Hornady manual. My chosen bullet is a 200 gr X-treme copper plated bullet. The diameter is 0.452. I am not experienced enough to know how much I can reduce the max. charge to get a min. charge without producing a squib.
     
    Last edited: Jan 11, 2012
  4. fredj338

    fredj338

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    Plated bullets should load somewhere between a lead bullet & a jacketed bullet. So you would want to be well off the 200grGDHP data on the Alliant site. As long as the slide cycles, there is little risk of the bullet sticking in the bbl. Alliant recommend reducing their max daat by 10% & working it back up. I would do that & go up in 0.1gr increments.
     
  5. Melissa5

    Melissa5

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    Thank you, Fred. That was very helpful and appreciated.
     
  6. Colorado4Wheel

    Colorado4Wheel

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    I would reduce more then 10%. 10% would be what you do for the fmj bullet. Your shooting plated. Reduce it a little more. Maybe. 2 grs more. Welcome to the forum.
     
  7. fredj338

    fredj338

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    I don't think she's loading BlueDot in that GAP, realy 2.0gr????? I suggested 10% as I find 10% reduction for jacketed in many calibers is below starting in other manuals. Alliant has 6.8gr as max & SPeer shows the same bullet @ 6.7gr STARTING. So a 10% reduction, call it 6gr, is likely to be right about where she wants it to be. IF you want softer, just reduce 0.2gr until the slide won't cycle. Then go up 0.2gr & check for reliabilty. Again, it's almost impossible to stick a bullet if the slide has enough force to cycle. Load in small lots of no more than 5 test rounds.
     
    Last edited: Jan 11, 2012
  8. PCJim

    PCJim Senior Member

    2,950
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    Aug 4, 2008
    FL
    She referenced a Unique load recipe for the 200gr GDHP. 6.0gr should be a good starting point for the plated bullet. I'm pretty sure its a RN design, so she will need to load longer than the stated 1.07. Melissa, load those rounds as long as you can and still be able to fit into the magazine. You can increase the charge in .1 or .2gr increments for increased pressure/velocity if needed or wanted. Just pay attention to what the rounds are telling you in your pistol.

    I can't get over that COL. Thats short 9mm territory. Just doesn't seem right for the big 45 cal bullets...
     
  9. Colorado4Wheel

    Colorado4Wheel

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    I meant .2 grs. That was a cell phone typo.
     
  10. Steve Koski

    Steve Koski Got Insurance? Millennium Member

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    Jan 31, 1999
    Montanuh
    I have a similar questions:

    A friend of mine has a few hundred 230 HAP (JHP profile) bullets he want to burn up in his GAP. Does anyone have load data for 230 JHP's in a GAP with Unique (or any other powder for that matter)?

    Thanks,

    Koski
     
  11. HexHead

    HexHead

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    The 49th edition Lyman manual has .45 GAP loading data.
     
  12. Steve Koski

    Steve Koski Got Insurance? Millennium Member

    7,059
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    Jan 31, 1999
    Montanuh
  13. Melissa5

    Melissa5

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    Thanks for the great information, guys. I was waiting to see what ya'll said about reducing 2 whole grains.
     
  14. fredj338

    fredj338

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    That's why I have never warmed to the GAP round. It just looks wierd & offers me little if anything over a sim pistol in 45acp. Nothing against it, just don't want yet another caliber to load for.:yawn:
     
  15. dkf

    dkf

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    Nope. Only FMJ in 230gr and 185gr in JHP. No Unique data for any of the GAP loads.
     
  16. unclebob

    unclebob

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    That is what I thought until I tried it.
     
  17. Colorado4Wheel

    Colorado4Wheel

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    I don't know how you can say that. The GAP is a near clone for the ACP. Close enough that I wouldn't care about shooting it vs the acp. Your the guy who constantly says use a slow powder vs a fast powder because you won't notice the difference. So it's got to be close enough to not be a difference. BUT in the end, the GAP lets you shoot a similar cartridge to the 45acp but in a small frame Glock. That is a HUGE difference and worth a lot. I mean a huge amount. I really don't like my G20 because of the big frame. Not sure if I will get rid of it but I hate the frame size.
     
  18. fredj338

    fredj338

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    For Glock shooters maybe. For say a 1911 or XD, no appreciable diff in guns size if any at all. Since I am really not a GLock shooter, even though I own several, the GAP makes no sense to me. If I was a Glock afficienado, then I would agree, I don't like the G20/21 either. :yawn:
    BTW, what does the GAP have to do with powder charges Steve? That statement I will always stand behind; use the appropriate powder for the task, never said anything diff. The fact I don't like TG is a personal pref I have backed up many, many times. The fact many disagree doesn't change my informed opinion.:supergrin:
     
    Last edited: Jan 12, 2012
  19. Colorado4Wheel

    Colorado4Wheel

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    I notice a big difference between medium burn and fast burn powders. You don't from what you say. So if you don't notice the difference between unique and tg then the difference between gap and acp would be even less. Never shot a gap for the record. But from all reports they are very similar if not the gap being nicer.
     
  20. dbarry

    dbarry Silver Member

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    Thats right uncle bob! Once you try Gap you'll never... darn

    maybe Jack can help me out again... :O)