An interesting challenge...

Discussion in 'Handloading and Reloading' started by GeoDudeFlorida, Feb 23, 2021.

  1. GeoDudeFlorida

    GeoDudeFlorida Member

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    My nearest neighbor asked me last weekend if I could work up a gallery load for his .375H&H Magnum Model 70 using .375" or .380" round ball (he has both). I said I would work on it using what I knew about making round ball gallery loads - which I have for .30-30 and .30-06 - and my library of loading manuals. So far, all I've found are some vague references to Red Dot and Unique powder generic gallery rifle or low-recoil target loads. Generally, any 30-caliber rifle and 8 grains of Red Dot or 10 grains of Unique and a light, soft lead projectile is considered "the load" for small game and close-range targets. Has anyone ever tried such a project? Any thoughts on .375" vs. .380" RB?
     
  2. FROGO207

    FROGO207 Member

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    Google "Ed Harris the load" you will get more info than you will ever want to read.:thumbup:
     
  3. GeoDudeFlorida

    GeoDudeFlorida Member

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    To the best of my knowledge, Mr. Harris never adapted his Load to round ball. I have using both Red Dot and Unique but only in two cartridges: .30-30 and .30-06. But it's a good starting point. :)
     
  4. osprey176

    osprey176 Member

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    Cast bullets and Trail Boss will be soft shooting,probably just right for gallery type loads. 375 round balls aren’t accurate my 375 Winchester,I’d think .380s sized down might give a little more surface to grip the rifling,and likely better accuracy.
     
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  5. gotboostvr

    gotboostvr Member

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    It's been a minute since I've read his article on it, but from memory he was advocating a "standard weight" cast bullet for the cartridge (i.e. 150gr for 308/30-06) over a dash of RedDot (8 or 9gr if I remember).

    I openly wonder, a round ball would weigh less, which typically requires less power to reach the same velocity and the larger 375H&H case means you'd normally need more powder to reach the same velocity... about 8 or 9gr of RedDot would probably be about the right starting point.
     
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  6. GeoDudeFlorida

    GeoDudeFlorida Member

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    ——
    Thanks for the tip, Frog! Harris made the point that 2400 is not position sensitive and that was one of the reasons he chose it - based on Mattern’s testing. Red Dot and Bullseye also tend to be position insensitive but not to the same extent as 2400 - but TiteGroup is less position sensitive than either RD or BE. I may suggest we include 6-7 grains of TG as another starting point in that massive cavern of the .375H&H’s case with a .380” round ball shaved into the neck and crimped at mid-point to avoid set-back.

    This is going to be a lot of fun! :)
     
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  7. jmorris

    jmorris Member

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    I’d likely try trailboss. Have used it for cast 150’s in a 308 as backyard plinkers, 2” @ 60 yards, no recoil, not much noise. Personally I’d just as soon shoot a 9mm 147 from a rifle but I guess we all have to play...
     
  8. GeoDudeFlorida

    GeoDudeFlorida Member

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    ——
    Two problems: First, the neighbor wants to try roundball and its his request to make the loads; and, Second, I don’t have any Trailboss. :(
     
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  9. jmorris

    jmorris Member

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    Not having any does make it less than ideal. It is pretty good for reduced loads using a variety of projectiles. Actually about the only thing I have found it good for and about the only thing I suggest it for because a container isn’t a pound but is priced like it is. :)

    Be sure to post results of what you come up with.
     
    Last edited: Feb 23, 2021
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  10. FROGO207

    FROGO207 Member

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    I have the big 2 gallon sized keg of Trail Boss as well as 16 pounds of Promo and a like amount of 700X and Unique. Too bad things are so hard to get these days. A bullet sizer and the round balls would fly better or size down 40 cal lead bullets for accuracy would work. There are a lot of ways to approach this and looks like you have some ideas now OP.
     
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  11. nofendertom

    nofendertom Member

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    I have tried round lead balls and Unique in a 30-30. The problem was crimping the case on the lead ball. I used cast bullets for light powder puff loads.
     
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  12. GeoDudeFlorida

    GeoDudeFlorida Member

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    ---
    For .30-30, I bell the case mouth to .311/.312 using a Lee universal expander die (you can use an OD mic' and subtract 2x case thickness OR use an ID mic' to verify - I use an OD mic') and - literally - "drop" a Hornady .32 round ball (actual diameter .315 depending on where you measure - use the widest circumference) into the bell, press into place so the mid-point of the ball hits the rim of the case (approx. 0.158" exposed lead) and put a drop of red Loktite (JUST a drop) on the rim and roll it around the edge, coating the entire surface where the crimp will impact, and crimp - don't let it dry on the ball before crimping. It holds tightly enough for the single-shot Contender and gives a nice, pleasant "pop!" when fired. POA at 50 feet and tends to group about like a cylinder-bore 12ga. at the same range.

    Will a similar method hold tightly enough to feed in a Winchester 70's magazine? We'll find out. :)

    Edit: Forgot to mention I use a Lee FCD to set the crimp.
     
  13. Barbaroja

    Barbaroja Member

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    I use 5.4gn of unique under a 45ish grain round ball in 30-30. I’d think starting with mid range 30-06 round ball data might work
     
  14. Bfh_auto

    Bfh_auto Member

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    That 700-x makes some great gallery loads for rifles.
    I don't know about using a round ball. It seems it would lead pretty badly.
     
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  15. FROGO207

    FROGO207 Member

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    If you coat the round ball with a layer of alox leading will be gone!
     
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