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Thread: 300 BO or BLK reloading

  1. #61
    The R in F.A.R.T RevolverRob's Avatar
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    May 2014
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    Gotham Adjacent
    Quote Originally Posted by EricP View Post
    Trimming to 1.358".

    I really don't know how much case neck tension and surface area is required to keep a 300 BLK from setting back, but I wouldn't really want to find out. For what that gun cost and the potential for injury, I'd ditch the brass.
    Excellent point. I went through the trimmed pieces and found all of them under 34.2mm (~1.348") and tossed them. That was a grand total of 8 cases. Seems false economy to try to save 8 cases. I should've just done that to begin with.

    I adjusted to cut my cases a bit longer as well to avoid this issue, so they size out on the longer side. I may need to trim a bit more, but that's fine.

    Glad I asked here, I hadn't thought about neck tension and setback.

  2. #62

  3. #63
    Site Supporter
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    Oct 2013
    Location
    Canton GA
    American Reloading had 300 BO brass on sale. I just got 250 used 300 BO from Midsouth. I got stuff to make 300 from 223 but decided my time was better used reloading 223, 9, and 6XC

  4. #64
    Site Supporter entropy's Avatar
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    Apr 2012
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    Far Upper Midwest. Lower Midwest When I Absolutely Have To
    Graf’s had the Barnes 110gr Tac Tx in stock this morning when I coffee surfed. Stocked up. Picked up a few bags of the Hornady 125gr FMJ too. I need to load up a new plinker....

    Anyone do Hornady 125gr FMJ?

    I have data for the 125gr (120?) Barnes black tip boat tails. That would prolly be a good start subtracting 10%

    Never mind. Forgot I had the Hornady book on Kindle...<shrugs shoulders>
    Last edited by entropy; 06-25-2020 at 05:52 PM.
    Working diligently to enlarge my group size.

  5. #65
    The R in F.A.R.T RevolverRob's Avatar
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    May 2014
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    Midsouth Shooter Supply has 500ct 125-grain Speer TNTs in stock right now - ~76 bucks per 500, so 15.1 cents/bullet.

  6. #66
    Quote Originally Posted by RevolverRob View Post
    If anyone is wondering -

    You can chuck a 1/4” drive extension into a Ryobi 18v drill and use a 3/8” socket to pretty much perfectly hold a 5.56 case. This is more poor man’s annealing setup. Tempilaq on the case, butane torch, power drill.

    Attachment 55250
    Dude, I don’t even resize .300BO, let alone anneal

    #RyobiMasterRace
    #RESIST

  7. #67
    The R in F.A.R.T RevolverRob's Avatar
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    May 2014
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    Gotham Adjacent
    Quote Originally Posted by LittleLebowski View Post
    Dude, I don’t even resize .300BO, let alone anneal

    #RyobiMasterRace
    There’s no kill like overkill...

    I’m using so many 18v Ryobi tools it’s ridiculous. I wonder if I can figure out a way to rig up some kind of Ryobi tool to run my press for me too?

  8. #68
    Quote Originally Posted by RevolverRob View Post
    There’s no kill like overkill...

    I’m using so many 18v Ryobi tools it’s ridiculous. I wonder if I can figure out a way to rig up some kind of Ryobi tool to run my press for me too?
    The moment you need a real press, holler. PF would be glad to give you a purpose built Lee single stage.
    #RESIST

  9. #69
    Site Supporter entropy's Avatar
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    Apr 2012
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    Far Upper Midwest. Lower Midwest When I Absolutely Have To
    Away from the loading room, but brought my Lee turret press and basic supplies with. I loaded up
    A spread of the Hornady 125gr FMJ using 1680, AA9, and H110. Goal is an inexpensive practice round using powders I have plenty of on hand. Mixed brass, plenty of former 5.56 in the mix. Hopefully find something sub-2000fps that is fairly accurate. I have the luxury of stepping out the back door where I am to test things further once I get it narrowed down. Much easier than multiple trips to the range. I had pulled the barrel and swapped to a shorter rail again to facilitate fitting the gun into a carry bag. Re-zeroed at 25yds (1.2”low) then tweaked it at 100yds. All minor adjustments, but the 90F heat slowed the process a bit. I’ll post the results.
    Working diligently to enlarge my group size.

  10. #70
    Site Supporter entropy's Avatar
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    Apr 2012
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    Far Upper Midwest. Lower Midwest When I Absolutely Have To
    MidwayUSA has the Hornady 190 SubX in stock (or at least they did) the other day. Picked up a few boxes. My pistol likes the factory loading so will try to duplicate. Data a bit scarce, but looks like 1680 is getting the nod at around 10gr.
    Working diligently to enlarge my group size.

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