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Thread: Pressure testing my 2-Ball Loads

  1. #1
    Boolit Master Blood Trail's Avatar
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    Pressure testing my 2-Ball Loads

    Hereís a follow-up for my two-ball load Iíve been working on.

    Load goes has followed:

    -2.75Ē Cheddite hull
    -26 grs of Longshot
    -MG42 wad
    -2 .60 cal hard cast balls with a 20 ga low profile gas seal between. #47 buffer added.
    -roll crimp with a bingo chip as an overshot card.
    - velocity hoovered in the 1100+fps.


    Pressure testing:

    1. 10,969 psi
    2. 10,573 psi
    3. 9926 psi

    The purpose of this testing was to check repeatability of my last range outing. I shot these using mod and full chokes. Patterned better with mod.

    1 st shot:



    2nd shot. Forgot to add buffer:




    3rd shot with the mod:




    First shot full. Thatís two holes, but I could not repeat that.



    2nd and 3rd full:




    Pattern size:l and pressure.







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  2. #2
    Boolit Grand Master

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    Now that is looking pretty nice BT! I am liking that.

    I have got to get my butt out shooting to burn up some slugs I have had loaded for some time now. I also want to revisit the 2 ball load. Not sure I want to venture into the Tri-Ball load but a zippy 2 ball load does interest me.

    Have you tried any other powders? Just wondering how Blue Dot would do since it gets a Tri-Ball payload to similar velocity at similar pressure. Longshot appears to be slightly slower burn rate than BD though. I'll have to see if Longshot is available locally but I am betting not or at least not currently.

    Good stuff that! Thanks for posting those results.

    Longbow

  3. #3
    Boolit Buddy
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    Impressive results!! Nice work!!


    Blood Trail, little question .... were you using the MG42 or the Cushioned LBC wad?

    In one of your pictures you showed the Cushioned LBC wad .... so I just wanted to confirm.

    I had a look at both last night with two 600 round balls, and the lower or first ball sits much better in the MG42 Wad. The MG42 Wad has slight taper that the Cushioned LBC wad does not have.

    MG42 Wad
    https://www.ballisticproducts.com/MG...tinfo/072MG42/


    Cushioned LBC
    https://www.ballisticproducts.com/Cu...tinfo/0729012/

  4. #4
    Boolit Master Blood Trail's Avatar
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    Quote Originally Posted by faustus View Post
    Impressive results!! Nice work!!


    Blood Trail, little question .... were you using the MG42 or the Cushioned LBC wad?

    In one of your pictures you showed the Cushioned LBC wad .... so I just wanted to confirm.

    I had a look at both last night with two 600 round balls, and the lower or first ball sits much better in the MG42 Wad. The MG42 Wad has slight taper that the Cushioned LBC wad does not have.

    MG42 Wad
    https://www.ballisticproducts.com/MG...tinfo/072MG42/


    Cushioned LBC
    https://www.ballisticproducts.com/Cu...tinfo/0729012/
    Oh, it was the MG42 wad. Iíd never loaded these in CLCB wads and honestly, I should as those wads are thicker than MG42ís.

    Those where the LBC sabot slugs I was testing. Sorry for the confusion.


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  5. #5
    USMC 77, USRA 79


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    and this was a smooth bore shotgun BT?
    Any technology not understood, can seem like Magic!!!

    I will love the Lord with all my heart, all my soul, and all my mind.

  6. #6
    Boolit Master Blood Trail's Avatar
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    Quote Originally Posted by Markopolo View Post
    and this was a smooth bore shotgun BT?
    Yessir. 590A1


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  7. #7
    Boolit Mold
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    Looks good BT...one of my next projects is to find a deer load for my Dad's Winchester 1400 12 Gauge semiauto with a 26 inch modified choke barrel.

    I will try this one first. Which 20 Gauge low profile gas seal do you use between the round balls?

    Thanks a bunch,
    LeonCarr

  8. #8
    Boolit Master



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    What’s your setup for measuring pressure?

  9. #9
    Boolit Master Blood Trail's Avatar
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    Quote Originally Posted by LeonCarr View Post
    Looks good BT...one of my next projects is to find a deer load for my Dad's Winchester 1400 12 Gauge semiauto with a 26 inch modified choke barrel.

    I will try this one first. Which 20 Gauge low profile gas seal do you use between the round balls?

    Thanks a bunch,
    LeonCarr
    Itís the red one from BPI. Itís called the PT20GS item #222PT20GS.


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  10. #10
    Boolit Master Blood Trail's Avatar
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    Quote Originally Posted by GregLaROCHE View Post
    Whatís your setup for measuring pressure?
    Iím using a Pressure Trace 2.


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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check