30 sherman magnum

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by elkaholic, Mar 23, 2019.


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  1. elkaholic

    elkaholic Official LRH Sponsor

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    This was formally the 300 PRC S.I. for those who missed it.
    I got out a couple days ago to do some more testing and the mirage shooting over the bright snow was terrible so I couldn't really accomplish as much as I wanted to. I did get some velocities and enough data to make another run on a couple loads when conditions warrant.
    I ran some 225 eldm's at 3059 with N570 that showed potential
    I also shot some 215 Bergers at 3167' that also looked like they need more testing.
    Below are pics of the brass which didn't show any over pressure and a pic of the 215 Berger group. I think in better condition this load would cut a single hole. IMG_20190321_093444900.jpg IMG_20190321_094051849_HDR.jpg
     
  2. yorke-1

    yorke-1 Well-Known Member

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    Looking good! Any updates on the dies?
     
  3. elkaholic

    elkaholic Official LRH Sponsor

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    According to Whidden it should be in a week
    BTW, another client shot some Hornady 225 factory ammo into 3/8" while fire forming in his new chamber.
     
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  4. Rhovee

    Rhovee Well-Known Member

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    You should run 215’s and H1000 up to pressure and see how it compares to 30/28 Nosler. My accuracy load was 86 grains H1000 for 3106 average. Pressure was 3140 at 87 grains
     
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  5. Elk Hunter 338

    Elk Hunter 338 Well-Known Member

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    barrel length??
     
  6. Elk Hunter 338

    Elk Hunter 338 Well-Known Member

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    I second this!! A powder that you can actually get!!
     
    Last edited: Mar 24, 2019
  7. yorke-1

    yorke-1 Well-Known Member

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    Thanks. In my experience, a Whidden week is month to the rest of us. LOL

    I should probably start accumulating parts now so I can actually work on having a barrel chambered some time this summer. Too many projects, not enough time.....
     
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  8. elkaholic

    elkaholic Official LRH Sponsor

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    28"
     
  9. elkaholic

    elkaholic Official LRH Sponsor

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    I am using Hornady brass you know:D
    I'll try it when I get a chance
     
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  10. Rhovee

    Rhovee Well-Known Member

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    I was using Nosler. A little tougher than Hornady. Just curious how hard you could push it. It was a hot load. 3-4 loadings and pockets were toast.
     
  11. elkaholic

    elkaholic Official LRH Sponsor

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    I've shot these cases twice now at this velocity and primers are holding so far
     
  12. Rhovee

    Rhovee Well-Known Member

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    I was using Nosler. A little tougher than Hornady. Just curious how hard you could push it. It was a hot load. 3-4 loadings and pockets were toast.
     
  13. Carl Scott

    Carl Scott Member

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    Tagging in. Waiting on barrel to show up. 28” 1:9t Carbon Six barrel.
     
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  14. tbrice23

    tbrice23 Well-Known Member

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    Rich, do you remember how far off the lands you are with those 215s.