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Thread: Hornady 125gr SST and the .300 BLK

  1. #1
    Boolit Master
    Join Date
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    Hornady 125gr SST and the .300 BLK

    Just finished up doing some testing with this bullet in the .300 BLK, I thought other may be interested in the results. Details are below.

    - Rifle: Ruger American Rifle Ranch .300 BLK 1:7 twist
    - Bullet: Hornady 125gr SST
    - Brass: unfired Remington factory .300 BLK
    - Primer: Remington Small Rifle
    - Powder: H110 & Lil' Gun
    - Distance: 50yds
    - Temp: 40F

    I started with a 5 shot group of Hornady American Gunner 125gr HP to foul the barrel and have something to compare to. I then followed with 5 shots each: 17gr H110, 17.5gr H110, 18gr H110, 20gr Lil' Gun, and 21gr Lil' Gun. Depending on the data you look at, the LG loads were over max, but they are right at max according to Hodgdon. The pics really tell the story, the Lil' Gun performed the best and according to the data should definitely be fastest. The yellow dots are 1" diameter.







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    Sent from my LGLS775 using Tapatalk

  2. #2
    Boolit Master

    TCLouis's Avatar
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    Any idea what the velocity might be?
    Nothing is impossible for the person that does not have to do it.

  3. #3
    Boolit Master
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    Nothing wrong with any of those groups!

  4. #4
    Boolit Master
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    Quote Originally Posted by TCLouis View Post
    Any idea what the velocity might be?
    The 18gr of H110 should be running close to 2200fps and the 21gr of Lil' Gun should be clocking in at ~2400fps according to Hodgdon. Just as a note, the 21gr of Lil' Gun is a compressed charge and I did notice​ flattening on a couple of the primers. I will probably stick to 20gr as a go-to load with this bullet.

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    Last edited by three50seven; 03-18-2017 at 08:30 AM.

  5. #5
    Boolit Master
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    Quote Originally Posted by 54bore View Post
    Nothing wrong with any of those groups!
    Really you're right, without the fliers on the first two groups (which could have been me) they're all pretty darn good.

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  6. #6
    how hot was the barrel after shooting the lil gun?

  7. #7
    Boolit Master
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    Quote Originally Posted by BigMagShooter View Post
    how hot was the barrel after shooting the lil gun?
    I didn't check. It was only 10 rounds, and they were fired slowly, so I doubt it heated up too bad.

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  8. #8
    Boolit Master
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    Looking good.

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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